2019-05-19 12:07:45 +00:00
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# SPDX-License-Identifier: GPL-2.0-only
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[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
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menu "Core Netfilter Configuration"
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2021-01-25 23:20:26 +00:00
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depends on INET && NETFILTER
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[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
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netfilter: add netfilter ingress hook after handle_ing() under unique static key
This patch adds the Netfilter ingress hook just after the existing tc ingress
hook, that seems to be the consensus solution for this.
Note that the Netfilter hook resides under the global static key that enables
ingress filtering. Nonetheless, Netfilter still also has its own static key for
minimal impact on the existing handle_ing().
* Without this patch:
Result: OK: 6216490(c6216338+d152) usec, 100000000 (60byte,0frags)
16086246pps 7721Mb/sec (7721398080bps) errors: 100000000
42.46% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
25.92% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
7.81% kpktgend_0 [pktgen] [k] pktgen_thread_worker
5.62% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
2.70% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
2.34% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
1.44% kpktgend_0 [kernel.kallsyms] [k] __build_skb
* With this patch:
Result: OK: 6214833(c6214731+d101) usec, 100000000 (60byte,0frags)
16090536pps 7723Mb/sec (7723457280bps) errors: 100000000
41.23% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
26.57% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
7.72% kpktgend_0 [pktgen] [k] pktgen_thread_worker
5.55% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
2.78% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
2.06% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
1.43% kpktgend_0 [kernel.kallsyms] [k] __build_skb
* Without this patch + tc ingress:
tc filter add dev eth4 parent ffff: protocol ip prio 1 \
u32 match ip dst 4.3.2.1/32
Result: OK: 9269001(c9268821+d179) usec, 100000000 (60byte,0frags)
10788648pps 5178Mb/sec (5178551040bps) errors: 100000000
40.99% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
17.50% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
11.77% kpktgend_0 [cls_u32] [k] u32_classify
5.62% kpktgend_0 [kernel.kallsyms] [k] tc_classify_compat
5.18% kpktgend_0 [pktgen] [k] pktgen_thread_worker
3.23% kpktgend_0 [kernel.kallsyms] [k] tc_classify
2.97% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
1.83% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
1.50% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
0.99% kpktgend_0 [kernel.kallsyms] [k] __build_skb
* With this patch + tc ingress:
tc filter add dev eth4 parent ffff: protocol ip prio 1 \
u32 match ip dst 4.3.2.1/32
Result: OK: 9308218(c9308091+d126) usec, 100000000 (60byte,0frags)
10743194pps 5156Mb/sec (5156733120bps) errors: 100000000
42.01% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
17.78% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
11.70% kpktgend_0 [cls_u32] [k] u32_classify
5.46% kpktgend_0 [kernel.kallsyms] [k] tc_classify_compat
5.16% kpktgend_0 [pktgen] [k] pktgen_thread_worker
2.98% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
2.84% kpktgend_0 [kernel.kallsyms] [k] tc_classify
1.96% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
1.57% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
Note that the results are very similar before and after.
I can see gcc gets the code under the ingress static key out of the hot path.
Then, on that cold branch, it generates the code to accomodate the netfilter
ingress static key. My explanation for this is that this reduces the pressure
on the instruction cache for non-users as the new code is out of the hot path,
and it comes with minimal impact for tc ingress users.
Using gcc version 4.8.4 on:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
[...]
L1d cache: 16K
L1i cache: 64K
L2 cache: 2048K
L3 cache: 8192K
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-13 16:19:38 +00:00
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config NETFILTER_INGRESS
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bool "Netfilter ingress support"
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2015-05-26 16:41:12 +00:00
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default y
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netfilter: add netfilter ingress hook after handle_ing() under unique static key
This patch adds the Netfilter ingress hook just after the existing tc ingress
hook, that seems to be the consensus solution for this.
Note that the Netfilter hook resides under the global static key that enables
ingress filtering. Nonetheless, Netfilter still also has its own static key for
minimal impact on the existing handle_ing().
* Without this patch:
Result: OK: 6216490(c6216338+d152) usec, 100000000 (60byte,0frags)
16086246pps 7721Mb/sec (7721398080bps) errors: 100000000
42.46% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
25.92% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
7.81% kpktgend_0 [pktgen] [k] pktgen_thread_worker
5.62% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
2.70% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
2.34% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
1.44% kpktgend_0 [kernel.kallsyms] [k] __build_skb
* With this patch:
Result: OK: 6214833(c6214731+d101) usec, 100000000 (60byte,0frags)
16090536pps 7723Mb/sec (7723457280bps) errors: 100000000
41.23% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
26.57% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
7.72% kpktgend_0 [pktgen] [k] pktgen_thread_worker
5.55% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
2.78% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
2.06% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
1.43% kpktgend_0 [kernel.kallsyms] [k] __build_skb
* Without this patch + tc ingress:
tc filter add dev eth4 parent ffff: protocol ip prio 1 \
u32 match ip dst 4.3.2.1/32
Result: OK: 9269001(c9268821+d179) usec, 100000000 (60byte,0frags)
10788648pps 5178Mb/sec (5178551040bps) errors: 100000000
40.99% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
17.50% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
11.77% kpktgend_0 [cls_u32] [k] u32_classify
5.62% kpktgend_0 [kernel.kallsyms] [k] tc_classify_compat
5.18% kpktgend_0 [pktgen] [k] pktgen_thread_worker
3.23% kpktgend_0 [kernel.kallsyms] [k] tc_classify
2.97% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
1.83% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
1.50% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
0.99% kpktgend_0 [kernel.kallsyms] [k] __build_skb
* With this patch + tc ingress:
tc filter add dev eth4 parent ffff: protocol ip prio 1 \
u32 match ip dst 4.3.2.1/32
Result: OK: 9308218(c9308091+d126) usec, 100000000 (60byte,0frags)
10743194pps 5156Mb/sec (5156733120bps) errors: 100000000
42.01% kpktgend_0 [kernel.kallsyms] [k] __netif_receive_skb_core
17.78% kpktgend_0 [kernel.kallsyms] [k] kfree_skb
11.70% kpktgend_0 [cls_u32] [k] u32_classify
5.46% kpktgend_0 [kernel.kallsyms] [k] tc_classify_compat
5.16% kpktgend_0 [pktgen] [k] pktgen_thread_worker
2.98% kpktgend_0 [kernel.kallsyms] [k] ip_rcv
2.84% kpktgend_0 [kernel.kallsyms] [k] tc_classify
1.96% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_internal
1.57% kpktgend_0 [kernel.kallsyms] [k] netif_receive_skb_sk
Note that the results are very similar before and after.
I can see gcc gets the code under the ingress static key out of the hot path.
Then, on that cold branch, it generates the code to accomodate the netfilter
ingress static key. My explanation for this is that this reduces the pressure
on the instruction cache for non-users as the new code is out of the hot path,
and it comes with minimal impact for tc ingress users.
Using gcc version 4.8.4 on:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
[...]
L1d cache: 16K
L1i cache: 64K
L2 cache: 2048K
L3 cache: 8192K
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-13 16:19:38 +00:00
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select NET_INGRESS
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help
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This allows you to classify packets from ingress using the Netfilter
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infrastructure.
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netfilter: Introduce egress hook
Support classifying packets with netfilter on egress to satisfy user
requirements such as:
* outbound security policies for containers (Laura)
* filtering and mangling intra-node Direct Server Return (DSR) traffic
on a load balancer (Laura)
* filtering locally generated traffic coming in through AF_PACKET,
such as local ARP traffic generated for clustering purposes or DHCP
(Laura; the AF_PACKET plumbing is contained in a follow-up commit)
* L2 filtering from ingress and egress for AVB (Audio Video Bridging)
and gPTP with nftables (Pablo)
* in the future: in-kernel NAT64/NAT46 (Pablo)
The egress hook introduced herein complements the ingress hook added by
commit e687ad60af09 ("netfilter: add netfilter ingress hook after
handle_ing() under unique static key"). A patch for nftables to hook up
egress rules from user space has been submitted separately, so users may
immediately take advantage of the feature.
Alternatively or in addition to netfilter, packets can be classified
with traffic control (tc). On ingress, packets are classified first by
tc, then by netfilter. On egress, the order is reversed for symmetry.
Conceptually, tc and netfilter can be thought of as layers, with
netfilter layered above tc.
Traffic control is capable of redirecting packets to another interface
(man 8 tc-mirred). E.g., an ingress packet may be redirected from the
host namespace to a container via a veth connection:
tc ingress (host) -> tc egress (veth host) -> tc ingress (veth container)
In this case, netfilter egress classifying is not performed when leaving
the host namespace! That's because the packet is still on the tc layer.
If tc redirects the packet to a physical interface in the host namespace
such that it leaves the system, the packet is never subjected to
netfilter egress classifying. That is only logical since it hasn't
passed through netfilter ingress classifying either.
Packets can alternatively be redirected at the netfilter layer using
nft fwd. Such a packet *is* subjected to netfilter egress classifying
since it has reached the netfilter layer.
Internally, the skb->nf_skip_egress flag controls whether netfilter is
invoked on egress by __dev_queue_xmit(). Because __dev_queue_xmit() may
be called recursively by tunnel drivers such as vxlan, the flag is
reverted to false after sch_handle_egress(). This ensures that
netfilter is applied both on the overlay and underlying network.
Interaction between tc and netfilter is possible by setting and querying
skb->mark.
If netfilter egress classifying is not enabled on any interface, it is
patched out of the data path by way of a static_key and doesn't make a
performance difference that is discernible from noise:
Before: 1537 1538 1538 1537 1538 1537 Mb/sec
After: 1536 1534 1539 1539 1539 1540 Mb/sec
Before + tc accept: 1418 1418 1418 1419 1419 1418 Mb/sec
After + tc accept: 1419 1424 1418 1419 1422 1420 Mb/sec
Before + tc drop: 1620 1619 1619 1619 1620 1620 Mb/sec
After + tc drop: 1616 1624 1625 1624 1622 1619 Mb/sec
When netfilter egress classifying is enabled on at least one interface,
a minimal performance penalty is incurred for every egress packet, even
if the interface it's transmitted over doesn't have any netfilter egress
rules configured. That is caused by checking dev->nf_hooks_egress
against NULL.
Measurements were performed on a Core i7-3615QM. Commands to reproduce:
ip link add dev foo type dummy
ip link set dev foo up
modprobe pktgen
echo "add_device foo" > /proc/net/pktgen/kpktgend_3
samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh -i foo -n 400000000 -m "11:11:11:11:11:11" -d 1.1.1.1
Accept all traffic with tc:
tc qdisc add dev foo clsact
tc filter add dev foo egress bpf da bytecode '1,6 0 0 0,'
Drop all traffic with tc:
tc qdisc add dev foo clsact
tc filter add dev foo egress bpf da bytecode '1,6 0 0 2,'
Apply this patch when measuring packet drops to avoid errors in dmesg:
https://lore.kernel.org/netdev/a73dda33-57f4-95d8-ea51-ed483abd6a7a@iogearbox.net/
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Laura García Liébana <nevola@gmail.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-10-08 20:06:03 +00:00
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config NETFILTER_EGRESS
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bool "Netfilter egress support"
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default y
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select NET_EGRESS
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help
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This allows you to classify packets before transmission using the
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Netfilter infrastructure.
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config NETFILTER_SKIP_EGRESS
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def_bool NETFILTER_EGRESS && (NET_CLS_ACT || IFB)
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2005-08-10 02:30:24 +00:00
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config NETFILTER_NETLINK
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2007-12-05 09:31:52 +00:00
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tristate
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2005-08-10 02:44:15 +00:00
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2017-12-07 15:28:26 +00:00
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config NETFILTER_FAMILY_BRIDGE
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bool
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config NETFILTER_FAMILY_ARP
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bool
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2021-06-04 10:27:07 +00:00
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config NETFILTER_NETLINK_HOOK
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tristate "Netfilter base hook dump support"
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depends on NETFILTER_ADVANCED
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2021-06-08 20:53:22 +00:00
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depends on NF_TABLES
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2021-06-04 10:27:07 +00:00
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select NETFILTER_NETLINK
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help
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If this option is enabled, the kernel will include support
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to list the base netfilter hooks via NFNETLINK.
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This is helpful for debugging.
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netfilter: add extended accounting infrastructure over nfnetlink
We currently have two ways to account traffic in netfilter:
- iptables chain and rule counters:
# iptables -L -n -v
Chain INPUT (policy DROP 3 packets, 867 bytes)
pkts bytes target prot opt in out source destination
8 1104 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0
- use flow-based accounting provided by ctnetlink:
# conntrack -L
tcp 6 431999 ESTABLISHED src=192.168.1.130 dst=212.106.219.168 sport=58152 dport=80 packets=47 bytes=7654 src=212.106.219.168 dst=192.168.1.130 sport=80 dport=58152 packets=49 bytes=66340 [ASSURED] mark=0 use=1
While trying to display real-time accounting statistics, we require
to pool the kernel periodically to obtain this information. This is
OK if the number of flows is relatively low. However, in case that
the number of flows is huge, we can spend a considerable amount of
cycles to iterate over the list of flows that have been obtained.
Moreover, if we want to obtain the sum of the flow accounting results
that match some criteria, we have to iterate over the whole list of
existing flows, look for matchings and update the counters.
This patch adds the extended accounting infrastructure for
nfnetlink which aims to allow displaying real-time traffic accounting
without the need of complicated and resource-consuming implementation
in user-space. Basically, this new infrastructure allows you to create
accounting objects. One accounting object is composed of packet and
byte counters.
In order to manipulate create accounting objects, you require the
new libnetfilter_acct library. It contains several examples of use:
libnetfilter_acct/examples# ./nfacct-add http-traffic
libnetfilter_acct/examples# ./nfacct-get
http-traffic = { pkts = 000000000000, bytes = 000000000000 };
Then, you can use one of this accounting objects in several iptables
rules using the new nfacct match (which comes in a follow-up patch):
# iptables -I INPUT -p tcp --sport 80 -m nfacct --nfacct-name http-traffic
# iptables -I OUTPUT -p tcp --dport 80 -m nfacct --nfacct-name http-traffic
The idea is simple: if one packet matches the rule, the nfacct match
updates the counters.
Thanks to Patrick McHardy, Eric Dumazet, Changli Gao for reviewing and
providing feedback for this contribution.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-23 13:19:50 +00:00
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config NETFILTER_NETLINK_ACCT
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2019-09-13 08:13:02 +00:00
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tristate "Netfilter NFACCT over NFNETLINK interface"
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netfilter: add extended accounting infrastructure over nfnetlink
We currently have two ways to account traffic in netfilter:
- iptables chain and rule counters:
# iptables -L -n -v
Chain INPUT (policy DROP 3 packets, 867 bytes)
pkts bytes target prot opt in out source destination
8 1104 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0
- use flow-based accounting provided by ctnetlink:
# conntrack -L
tcp 6 431999 ESTABLISHED src=192.168.1.130 dst=212.106.219.168 sport=58152 dport=80 packets=47 bytes=7654 src=212.106.219.168 dst=192.168.1.130 sport=80 dport=58152 packets=49 bytes=66340 [ASSURED] mark=0 use=1
While trying to display real-time accounting statistics, we require
to pool the kernel periodically to obtain this information. This is
OK if the number of flows is relatively low. However, in case that
the number of flows is huge, we can spend a considerable amount of
cycles to iterate over the list of flows that have been obtained.
Moreover, if we want to obtain the sum of the flow accounting results
that match some criteria, we have to iterate over the whole list of
existing flows, look for matchings and update the counters.
This patch adds the extended accounting infrastructure for
nfnetlink which aims to allow displaying real-time traffic accounting
without the need of complicated and resource-consuming implementation
in user-space. Basically, this new infrastructure allows you to create
accounting objects. One accounting object is composed of packet and
byte counters.
In order to manipulate create accounting objects, you require the
new libnetfilter_acct library. It contains several examples of use:
libnetfilter_acct/examples# ./nfacct-add http-traffic
libnetfilter_acct/examples# ./nfacct-get
http-traffic = { pkts = 000000000000, bytes = 000000000000 };
Then, you can use one of this accounting objects in several iptables
rules using the new nfacct match (which comes in a follow-up patch):
# iptables -I INPUT -p tcp --sport 80 -m nfacct --nfacct-name http-traffic
# iptables -I OUTPUT -p tcp --dport 80 -m nfacct --nfacct-name http-traffic
The idea is simple: if one packet matches the rule, the nfacct match
updates the counters.
Thanks to Patrick McHardy, Eric Dumazet, Changli Gao for reviewing and
providing feedback for this contribution.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-23 13:19:50 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_NETLINK
|
|
|
|
|
help
|
|
|
|
|
If this option is enabled, the kernel will include support
|
|
|
|
|
for extended accounting via NFNETLINK.
|
|
|
|
|
|
2005-08-10 02:44:15 +00:00
|
|
|
config NETFILTER_NETLINK_QUEUE
|
|
|
|
|
tristate "Netfilter NFQUEUE over NFNETLINK interface"
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2007-12-05 09:31:52 +00:00
|
|
|
select NETFILTER_NETLINK
|
2005-08-10 02:44:15 +00:00
|
|
|
help
|
2006-03-22 21:53:48 +00:00
|
|
|
If this option is enabled, the kernel will include support
|
2005-08-10 02:44:15 +00:00
|
|
|
for queueing packets via NFNETLINK.
|
2019-09-13 08:13:02 +00:00
|
|
|
|
2005-08-10 02:58:39 +00:00
|
|
|
config NETFILTER_NETLINK_LOG
|
|
|
|
|
tristate "Netfilter LOG over NFNETLINK interface"
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2007-12-05 09:31:52 +00:00
|
|
|
select NETFILTER_NETLINK
|
2005-08-10 02:58:39 +00:00
|
|
|
help
|
|
|
|
|
If this option is enabled, the kernel will include support
|
|
|
|
|
for logging packets via NFNETLINK.
|
|
|
|
|
|
|
|
|
|
This obsoletes the existing ipt_ULOG and ebg_ulog mechanisms,
|
|
|
|
|
and is also scheduled to replace the old syslog-based ipt_LOG
|
|
|
|
|
and ip6t_LOG modules.
|
|
|
|
|
|
2018-07-24 23:32:44 +00:00
|
|
|
config NETFILTER_NETLINK_OSF
|
|
|
|
|
tristate "Netfilter OSF over NFNETLINK interface"
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_NETLINK
|
|
|
|
|
help
|
|
|
|
|
If this option is enabled, the kernel will include support
|
|
|
|
|
for passive OS fingerprint via NFNETLINK.
|
|
|
|
|
|
2007-12-05 09:31:37 +00:00
|
|
|
config NF_CONNTRACK
|
2006-12-03 06:05:46 +00:00
|
|
|
tristate "Netfilter connection tracking support"
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2018-06-29 05:46:51 +00:00
|
|
|
select NF_DEFRAG_IPV4
|
|
|
|
|
select NF_DEFRAG_IPV6 if IPV6 != n
|
2006-12-03 06:05:46 +00:00
|
|
|
help
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
Connection tracking keeps a record of what packets have passed
|
|
|
|
|
through your machine, in order to figure out how they are related
|
|
|
|
|
into connections.
|
|
|
|
|
|
2006-12-03 06:05:46 +00:00
|
|
|
This is required to do Masquerading or other kinds of Network
|
2008-07-08 09:35:27 +00:00
|
|
|
Address Translation. It can also be used to enhance packet
|
|
|
|
|
filtering (see `Connection state match support' below).
|
2006-12-03 06:05:46 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2021-03-25 17:25:05 +00:00
|
|
|
config NF_LOG_SYSLOG
|
|
|
|
|
tristate "Syslog packet logging"
|
|
|
|
|
default m if NETFILTER_ADVANCED=n
|
|
|
|
|
help
|
|
|
|
|
This option enable support for packet logging via syslog.
|
2021-03-25 17:25:10 +00:00
|
|
|
It supports IPv4, IPV6, ARP and common transport protocols such
|
|
|
|
|
as TCP and UDP.
|
2021-03-25 17:25:05 +00:00
|
|
|
This is a simpler but less flexible logging method compared to
|
|
|
|
|
CONFIG_NETFILTER_NETLINK_LOG.
|
|
|
|
|
If both are enabled the backend to use can be configured at run-time
|
|
|
|
|
by means of per-address-family sysctl tunables.
|
|
|
|
|
|
2008-10-08 09:35:18 +00:00
|
|
|
if NF_CONNTRACK
|
2017-12-09 20:01:08 +00:00
|
|
|
config NETFILTER_CONNCOUNT
|
|
|
|
|
tristate
|
2008-10-08 09:35:18 +00:00
|
|
|
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
config NF_CONNTRACK_MARK
|
|
|
|
|
bool 'Connection mark tracking support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
help
|
|
|
|
|
This option enables support for connection marks, used by the
|
|
|
|
|
`CONNMARK' target and `connmark' match. Similar to the mark value
|
|
|
|
|
of packets, but this mark value is kept in the conntrack session
|
|
|
|
|
instead of the individual packets.
|
|
|
|
|
|
2006-06-09 07:31:46 +00:00
|
|
|
config NF_CONNTRACK_SECMARK
|
|
|
|
|
bool 'Connection tracking security mark support'
|
2008-10-08 09:35:18 +00:00
|
|
|
depends on NETWORK_SECMARK
|
2021-10-05 20:54:54 +00:00
|
|
|
default y if NETFILTER_ADVANCED=n
|
2006-06-09 07:31:46 +00:00
|
|
|
help
|
|
|
|
|
This option enables security markings to be applied to
|
|
|
|
|
connections. Typically they are copied to connections from
|
|
|
|
|
packets using the CONNSECMARK target and copied back from
|
|
|
|
|
connections to packets with the same target, with the packets
|
|
|
|
|
being originally labeled via SECMARK.
|
|
|
|
|
|
|
|
|
|
If unsure, say 'N'.
|
|
|
|
|
|
2010-02-15 17:13:33 +00:00
|
|
|
config NF_CONNTRACK_ZONES
|
|
|
|
|
bool 'Connection tracking zones'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This option enables support for connection tracking zones.
|
|
|
|
|
Normally, each connection needs to have a unique system wide
|
|
|
|
|
identity. Connection tracking zones allow to have multiple
|
|
|
|
|
connections using the same identity, as long as they are
|
|
|
|
|
contained in different zones.
|
|
|
|
|
|
|
|
|
|
If unsure, say `N'.
|
|
|
|
|
|
2011-04-21 07:32:45 +00:00
|
|
|
config NF_CONNTRACK_PROCFS
|
|
|
|
|
bool "Supply CT list in procfs (OBSOLETE)"
|
|
|
|
|
default y
|
|
|
|
|
depends on PROC_FS
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2011-04-21 07:32:45 +00:00
|
|
|
This option enables for the list of known conntrack entries
|
|
|
|
|
to be shown in procfs under net/netfilter/nf_conntrack. This
|
|
|
|
|
is considered obsolete in favor of using the conntrack(8)
|
|
|
|
|
tool which uses Netlink.
|
|
|
|
|
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
config NF_CONNTRACK_EVENTS
|
2008-01-15 07:31:36 +00:00
|
|
|
bool "Connection tracking events"
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
help
|
|
|
|
|
If this option is enabled, the connection tracking code will
|
|
|
|
|
provide a notifier chain that can be used by other kernel code
|
2006-03-22 21:53:48 +00:00
|
|
|
to get notified about changes in the connection tracking state.
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
|
|
|
|
|
If unsure, say `N'.
|
|
|
|
|
|
2012-02-28 22:36:48 +00:00
|
|
|
config NF_CONNTRACK_TIMEOUT
|
|
|
|
|
bool 'Connection tracking timeout'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This option enables support for connection tracking timeout
|
|
|
|
|
extension. This allows you to attach timeout policies to flow
|
|
|
|
|
via the CT target.
|
|
|
|
|
|
|
|
|
|
If unsure, say `N'.
|
|
|
|
|
|
2011-01-19 15:00:07 +00:00
|
|
|
config NF_CONNTRACK_TIMESTAMP
|
|
|
|
|
bool 'Connection tracking timestamping'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This option enables support for connection tracking timestamping.
|
|
|
|
|
This allows you to store the flow start-time and to obtain
|
|
|
|
|
the flow-stop time (once it has been destroyed) via Connection
|
|
|
|
|
tracking events.
|
|
|
|
|
|
|
|
|
|
If unsure, say `N'.
|
|
|
|
|
|
2013-01-11 06:30:44 +00:00
|
|
|
config NF_CONNTRACK_LABELS
|
2018-08-03 15:56:12 +00:00
|
|
|
bool "Connection tracking labels"
|
2013-01-11 06:30:44 +00:00
|
|
|
help
|
|
|
|
|
This option enables support for assigning user-defined flag bits
|
2018-08-03 15:56:12 +00:00
|
|
|
to connection tracking entries. It can be used with xtables connlabel
|
|
|
|
|
match and the nftables ct expression.
|
2013-01-11 06:30:44 +00:00
|
|
|
|
2008-03-20 14:15:55 +00:00
|
|
|
config NF_CT_PROTO_DCCP
|
2016-11-15 14:08:25 +00:00
|
|
|
bool 'DCCP protocol connection tracking support'
|
2008-03-20 14:15:55 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2016-11-15 14:08:25 +00:00
|
|
|
default y
|
2008-03-20 14:15:55 +00:00
|
|
|
help
|
|
|
|
|
With this option enabled, the layer 3 independent connection
|
|
|
|
|
tracking code will be able to do state tracking on DCCP connections.
|
|
|
|
|
|
2016-11-15 14:08:25 +00:00
|
|
|
If unsure, say Y.
|
2008-03-20 14:15:55 +00:00
|
|
|
|
2006-12-03 06:09:41 +00:00
|
|
|
config NF_CT_PROTO_GRE
|
2019-01-15 21:03:35 +00:00
|
|
|
bool
|
2006-12-03 06:09:41 +00:00
|
|
|
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
config NF_CT_PROTO_SCTP
|
2016-11-15 14:08:26 +00:00
|
|
|
bool 'SCTP protocol connection tracking support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2016-11-15 14:08:26 +00:00
|
|
|
default y
|
2017-01-02 12:29:40 +00:00
|
|
|
select LIBCRC32C
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
help
|
|
|
|
|
With this option enabled, the layer 3 independent connection
|
|
|
|
|
tracking code will be able to do state tracking on SCTP connections.
|
|
|
|
|
|
2016-11-15 14:08:26 +00:00
|
|
|
If unsure, say Y.
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
|
2007-07-15 03:48:44 +00:00
|
|
|
config NF_CT_PROTO_UDPLITE
|
2016-11-15 14:08:27 +00:00
|
|
|
bool 'UDP-Lite protocol connection tracking support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2016-11-15 14:08:27 +00:00
|
|
|
default y
|
2007-07-15 03:48:44 +00:00
|
|
|
help
|
|
|
|
|
With this option enabled, the layer 3 independent connection
|
|
|
|
|
tracking code will be able to do state tracking on UDP-Lite
|
|
|
|
|
connections.
|
|
|
|
|
|
2016-11-15 14:08:27 +00:00
|
|
|
If unsure, say Y.
|
2007-07-15 03:48:44 +00:00
|
|
|
|
2006-12-03 06:08:26 +00:00
|
|
|
config NF_CONNTRACK_AMANDA
|
2007-01-04 20:16:06 +00:00
|
|
|
tristate "Amanda backup protocol support"
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-12-03 06:08:26 +00:00
|
|
|
select TEXTSEARCH
|
|
|
|
|
select TEXTSEARCH_KMP
|
|
|
|
|
help
|
|
|
|
|
If you are running the Amanda backup package <http://www.amanda.org/>
|
|
|
|
|
on this machine or machines that will be MASQUERADED through this
|
|
|
|
|
machine, then you may want to enable this feature. This allows the
|
|
|
|
|
connection tracking and natting code to allow the sub-channels that
|
|
|
|
|
Amanda requires for communication of the backup data, messages and
|
|
|
|
|
index.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
config NF_CONNTRACK_FTP
|
2007-01-04 20:16:06 +00:00
|
|
|
tristate "FTP protocol support"
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-11-10 00:38:16 +00:00
|
|
|
help
|
|
|
|
|
Tracking FTP connections is problematic: special helpers are
|
|
|
|
|
required for tracking them, and doing masquerading and other forms
|
|
|
|
|
of Network Address Translation on them.
|
|
|
|
|
|
|
|
|
|
This is FTP support on Layer 3 independent connection tracking.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-12-03 06:08:46 +00:00
|
|
|
config NF_CONNTRACK_H323
|
2008-01-15 07:31:36 +00:00
|
|
|
tristate "H.323 protocol support"
|
2015-06-12 11:58:52 +00:00
|
|
|
depends on IPV6 || IPV6=n
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-12-03 06:08:46 +00:00
|
|
|
help
|
|
|
|
|
H.323 is a VoIP signalling protocol from ITU-T. As one of the most
|
|
|
|
|
important VoIP protocols, it is widely used by voice hardware and
|
|
|
|
|
software including voice gateways, IP phones, Netmeeting, OpenPhone,
|
|
|
|
|
Gnomemeeting, etc.
|
|
|
|
|
|
|
|
|
|
With this module you can support H.323 on a connection tracking/NAT
|
|
|
|
|
firewall.
|
|
|
|
|
|
|
|
|
|
This module supports RAS, Fast Start, H.245 Tunnelling, Call
|
|
|
|
|
Forwarding, RTP/RTCP and T.120 based audio, video, fax, chat,
|
|
|
|
|
whiteboard, file transfer, etc. For more information, please
|
|
|
|
|
visit http://nath323.sourceforge.net/.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-12-03 06:09:06 +00:00
|
|
|
config NF_CONNTRACK_IRC
|
2007-01-04 20:16:06 +00:00
|
|
|
tristate "IRC protocol support"
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2006-12-03 06:09:06 +00:00
|
|
|
help
|
|
|
|
|
There is a commonly-used extension to IRC called
|
|
|
|
|
Direct Client-to-Client Protocol (DCC). This enables users to send
|
|
|
|
|
files to each other, and also chat to each other without the need
|
|
|
|
|
of a server. DCC Sending is used anywhere you send files over IRC,
|
|
|
|
|
and DCC Chat is most commonly used by Eggdrop bots. If you are
|
|
|
|
|
using NAT, this extension will enable you to send files and initiate
|
|
|
|
|
chats. Note that you do NOT need this extension to get files or
|
|
|
|
|
have others initiate chats, or everything else in IRC.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2011-01-18 17:12:24 +00:00
|
|
|
config NF_CONNTRACK_BROADCAST
|
|
|
|
|
tristate
|
|
|
|
|
|
2006-12-03 06:09:24 +00:00
|
|
|
config NF_CONNTRACK_NETBIOS_NS
|
2008-01-15 07:31:36 +00:00
|
|
|
tristate "NetBIOS name service protocol support"
|
2011-01-18 17:12:24 +00:00
|
|
|
select NF_CONNTRACK_BROADCAST
|
2006-12-03 06:09:24 +00:00
|
|
|
help
|
|
|
|
|
NetBIOS name service requests are sent as broadcast messages from an
|
|
|
|
|
unprivileged port and responded to with unicast messages to the
|
|
|
|
|
same port. This make them hard to firewall properly because connection
|
|
|
|
|
tracking doesn't deal with broadcasts. This helper tracks locally
|
|
|
|
|
originating NetBIOS name service requests and the corresponding
|
|
|
|
|
responses. It relies on correct IP address configuration, specifically
|
|
|
|
|
netmask and broadcast address. When properly configured, the output
|
|
|
|
|
of "ip address show" should look similar to this:
|
|
|
|
|
|
|
|
|
|
$ ip -4 address show eth0
|
|
|
|
|
4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
|
|
|
|
|
inet 172.16.2.252/24 brd 172.16.2.255 scope global eth0
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2011-01-18 17:12:24 +00:00
|
|
|
config NF_CONNTRACK_SNMP
|
|
|
|
|
tristate "SNMP service protocol support"
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NF_CONNTRACK_BROADCAST
|
|
|
|
|
help
|
|
|
|
|
SNMP service requests are sent as broadcast messages from an
|
|
|
|
|
unprivileged port and responded to with unicast messages to the
|
|
|
|
|
same port. This make them hard to firewall properly because connection
|
|
|
|
|
tracking doesn't deal with broadcasts. This helper tracks locally
|
|
|
|
|
originating SNMP service requests and the corresponding
|
|
|
|
|
responses. It relies on correct IP address configuration, specifically
|
|
|
|
|
netmask and broadcast address.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-12-03 06:09:41 +00:00
|
|
|
config NF_CONNTRACK_PPTP
|
2007-01-04 20:16:06 +00:00
|
|
|
tristate "PPtP protocol support"
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-12-03 06:09:41 +00:00
|
|
|
select NF_CT_PROTO_GRE
|
|
|
|
|
help
|
|
|
|
|
This module adds support for PPTP (Point to Point Tunnelling
|
|
|
|
|
Protocol, RFC2637) connection tracking and NAT.
|
|
|
|
|
|
|
|
|
|
If you are running PPTP sessions over a stateful firewall or NAT
|
|
|
|
|
box, you may want to enable this feature.
|
|
|
|
|
|
|
|
|
|
Please note that not all PPTP modes of operation are supported yet.
|
|
|
|
|
Specifically these limitations exist:
|
2007-05-09 05:12:20 +00:00
|
|
|
- Blindly assumes that control connections are always established
|
2006-12-03 06:09:41 +00:00
|
|
|
in PNS->PAC direction. This is a violation of RFC2637.
|
|
|
|
|
- Only supports a single call within each session
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2007-02-07 23:05:12 +00:00
|
|
|
config NF_CONNTRACK_SANE
|
2012-10-02 18:19:54 +00:00
|
|
|
tristate "SANE protocol support"
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2007-02-07 23:05:12 +00:00
|
|
|
help
|
|
|
|
|
SANE is a protocol for remote access to scanners as implemented
|
|
|
|
|
by the 'saned' daemon. Like FTP, it uses separate control and
|
|
|
|
|
data connections.
|
|
|
|
|
|
|
|
|
|
With this module you can support SANE on a connection tracking
|
|
|
|
|
firewall.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-12-03 06:09:57 +00:00
|
|
|
config NF_CONNTRACK_SIP
|
2008-01-15 07:31:36 +00:00
|
|
|
tristate "SIP protocol support"
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2006-12-03 06:09:57 +00:00
|
|
|
help
|
|
|
|
|
SIP is an application-layer control protocol that can establish,
|
|
|
|
|
modify, and terminate multimedia sessions (conferences) such as
|
2019-07-08 22:57:09 +00:00
|
|
|
Internet telephony calls. With the nf_conntrack_sip and
|
2006-12-03 06:09:57 +00:00
|
|
|
the nf_nat_sip modules you can support the protocol on a connection
|
|
|
|
|
tracking/NATing firewall.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-12-03 06:10:18 +00:00
|
|
|
config NF_CONNTRACK_TFTP
|
2007-01-04 20:16:06 +00:00
|
|
|
tristate "TFTP protocol support"
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-12-03 06:10:18 +00:00
|
|
|
help
|
|
|
|
|
TFTP connection tracking helper, this is required depending
|
|
|
|
|
on how restrictive your ruleset is.
|
|
|
|
|
If you are using a tftp client behind -j SNAT or -j MASQUERADING
|
|
|
|
|
you will need this.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-01-05 20:19:05 +00:00
|
|
|
config NF_CT_NETLINK
|
2008-01-15 07:31:36 +00:00
|
|
|
tristate 'Connection tracking netlink interface'
|
2007-12-05 09:31:52 +00:00
|
|
|
select NETFILTER_NETLINK
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2006-01-05 20:19:05 +00:00
|
|
|
help
|
|
|
|
|
This option enables support for a netlink-based userspace interface
|
|
|
|
|
|
2012-02-28 18:13:48 +00:00
|
|
|
config NF_CT_NETLINK_TIMEOUT
|
|
|
|
|
tristate 'Connection tracking timeout tuning via Netlink'
|
|
|
|
|
select NETFILTER_NETLINK
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2018-08-02 03:56:24 +00:00
|
|
|
depends on NF_CONNTRACK_TIMEOUT
|
2012-02-28 18:13:48 +00:00
|
|
|
help
|
|
|
|
|
This option enables support for connection tracking timeout
|
|
|
|
|
fine-grain tuning. This allows you to attach specific timeout
|
|
|
|
|
policies to flows, instead of using the global timeout policy.
|
|
|
|
|
|
|
|
|
|
If unsure, say `N'.
|
|
|
|
|
|
2012-06-18 19:14:30 +00:00
|
|
|
config NF_CT_NETLINK_HELPER
|
|
|
|
|
tristate 'Connection tracking helpers in user-space via Netlink'
|
|
|
|
|
select NETFILTER_NETLINK
|
|
|
|
|
depends on NF_CT_NETLINK
|
|
|
|
|
depends on NETFILTER_NETLINK_QUEUE
|
2015-10-05 02:48:47 +00:00
|
|
|
depends on NETFILTER_NETLINK_GLUE_CT
|
2012-06-18 19:14:30 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This option enables the user-space connection tracking helpers
|
|
|
|
|
infrastructure.
|
|
|
|
|
|
|
|
|
|
If unsure, say `N'.
|
|
|
|
|
|
2015-10-05 02:48:47 +00:00
|
|
|
config NETFILTER_NETLINK_GLUE_CT
|
2015-10-05 02:50:46 +00:00
|
|
|
bool "NFQUEUE and NFLOG integration with Connection Tracking"
|
2015-10-05 02:48:47 +00:00
|
|
|
default n
|
2015-10-05 02:50:46 +00:00
|
|
|
depends on (NETFILTER_NETLINK_QUEUE || NETFILTER_NETLINK_LOG) && NF_CT_NETLINK
|
2012-06-19 00:10:57 +00:00
|
|
|
help
|
2015-10-05 02:50:46 +00:00
|
|
|
If this option is enabled, NFQUEUE and NFLOG can include
|
|
|
|
|
Connection Tracking information together with the packet is
|
|
|
|
|
the enqueued via NFNETLINK.
|
2012-06-19 00:10:57 +00:00
|
|
|
|
2012-08-26 17:14:06 +00:00
|
|
|
config NF_NAT
|
2019-02-19 16:38:21 +00:00
|
|
|
tristate "Network Address Translation support"
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
default m if NETFILTER_ADVANCED=n
|
|
|
|
|
help
|
|
|
|
|
The NAT option allows masquerading, port forwarding and other
|
|
|
|
|
forms of full Network Address Port Translation. This can be
|
|
|
|
|
controlled by iptables, ip6tables or nft.
|
2012-08-26 17:14:06 +00:00
|
|
|
|
2012-08-26 17:14:22 +00:00
|
|
|
config NF_NAT_AMANDA
|
|
|
|
|
tristate
|
|
|
|
|
depends on NF_CONNTRACK && NF_NAT
|
|
|
|
|
default NF_NAT && NF_CONNTRACK_AMANDA
|
|
|
|
|
|
2012-08-26 17:14:20 +00:00
|
|
|
config NF_NAT_FTP
|
|
|
|
|
tristate
|
|
|
|
|
depends on NF_CONNTRACK && NF_NAT
|
|
|
|
|
default NF_NAT && NF_CONNTRACK_FTP
|
|
|
|
|
|
2012-08-26 17:14:27 +00:00
|
|
|
config NF_NAT_IRC
|
|
|
|
|
tristate
|
|
|
|
|
depends on NF_CONNTRACK && NF_NAT
|
|
|
|
|
default NF_NAT && NF_CONNTRACK_IRC
|
|
|
|
|
|
2012-08-26 17:14:25 +00:00
|
|
|
config NF_NAT_SIP
|
|
|
|
|
tristate
|
|
|
|
|
depends on NF_CONNTRACK && NF_NAT
|
|
|
|
|
default NF_NAT && NF_CONNTRACK_SIP
|
|
|
|
|
|
2012-08-26 17:14:29 +00:00
|
|
|
config NF_NAT_TFTP
|
|
|
|
|
tristate
|
|
|
|
|
depends on NF_CONNTRACK && NF_NAT
|
|
|
|
|
default NF_NAT && NF_CONNTRACK_TFTP
|
|
|
|
|
|
2014-11-26 11:46:50 +00:00
|
|
|
config NF_NAT_REDIRECT
|
2018-05-24 11:17:29 +00:00
|
|
|
bool
|
2014-11-26 11:46:50 +00:00
|
|
|
|
2019-02-19 16:38:19 +00:00
|
|
|
config NF_NAT_MASQUERADE
|
|
|
|
|
bool
|
|
|
|
|
|
2013-08-27 06:50:14 +00:00
|
|
|
config NETFILTER_SYNPROXY
|
|
|
|
|
tristate
|
|
|
|
|
|
2009-04-24 14:55:25 +00:00
|
|
|
endif # NF_CONNTRACK
|
|
|
|
|
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
config NF_TABLES
|
2013-12-29 10:01:29 +00:00
|
|
|
select NETFILTER_NETLINK
|
2020-10-15 16:39:27 +00:00
|
|
|
select LIBCRC32C
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
tristate "Netfilter nf_tables support"
|
2013-12-30 14:09:18 +00:00
|
|
|
help
|
|
|
|
|
nftables is the new packet classification framework that intends to
|
|
|
|
|
replace the existing {ip,ip6,arp,eb}_tables infrastructure. It
|
|
|
|
|
provides a pseudo-state machine with an extensible instruction-set
|
|
|
|
|
(also known as expressions) that the userspace 'nft' utility
|
2020-07-25 17:02:25 +00:00
|
|
|
(https://www.netfilter.org/projects/nftables) uses to build the
|
2013-12-30 14:09:18 +00:00
|
|
|
rule-set. It also comes with the generic set infrastructure that
|
|
|
|
|
allows you to construct mappings between matchings and actions
|
|
|
|
|
for performance lookups.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here.
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
|
2015-03-05 13:56:15 +00:00
|
|
|
if NF_TABLES
|
2014-01-03 12:16:16 +00:00
|
|
|
config NF_TABLES_INET
|
2015-03-05 13:56:15 +00:00
|
|
|
depends on IPV6
|
2014-01-03 12:16:16 +00:00
|
|
|
select NF_TABLES_IPV4
|
|
|
|
|
select NF_TABLES_IPV6
|
2018-03-27 09:53:07 +00:00
|
|
|
bool "Netfilter nf_tables mixed IPv4/IPv6 tables support"
|
2014-01-03 12:16:16 +00:00
|
|
|
help
|
|
|
|
|
This option enables support for a mixed IPv4/IPv6 "inet" table.
|
|
|
|
|
|
2015-05-26 16:41:40 +00:00
|
|
|
config NF_TABLES_NETDEV
|
2018-03-27 09:53:07 +00:00
|
|
|
bool "Netfilter nf_tables netdev tables support"
|
2015-05-26 16:41:40 +00:00
|
|
|
help
|
|
|
|
|
This option enables support for the "netdev" table.
|
|
|
|
|
|
2016-08-18 10:13:13 +00:00
|
|
|
config NFT_NUMGEN
|
|
|
|
|
tristate "Netfilter nf_tables number generator module"
|
|
|
|
|
help
|
|
|
|
|
This option adds the number generator expression used to perform
|
|
|
|
|
incremental counting and random numbers bound to a upper limit.
|
|
|
|
|
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
config NFT_CT
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
tristate "Netfilter nf_tables conntrack module"
|
2013-12-30 14:09:18 +00:00
|
|
|
help
|
2017-01-09 22:24:18 +00:00
|
|
|
This option adds the "ct" expression that you can use to match
|
2013-12-30 14:09:18 +00:00
|
|
|
connection tracking information such as the flow state.
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
|
2018-01-07 00:04:26 +00:00
|
|
|
config NFT_FLOW_OFFLOAD
|
2018-01-12 15:50:26 +00:00
|
|
|
depends on NF_CONNTRACK && NF_FLOW_TABLE
|
2018-01-07 00:04:26 +00:00
|
|
|
tristate "Netfilter nf_tables hardware flow offload module"
|
|
|
|
|
help
|
|
|
|
|
This option adds the "flow_offload" expression that you can use to
|
|
|
|
|
choose what flows are placed into the hardware.
|
|
|
|
|
|
2018-06-02 19:38:51 +00:00
|
|
|
config NFT_CONNLIMIT
|
|
|
|
|
tristate "Netfilter nf_tables connlimit module"
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_CONNCOUNT
|
|
|
|
|
help
|
|
|
|
|
This option adds the "connlimit" expression that you can use to
|
|
|
|
|
ratelimit rule matchings per connections.
|
|
|
|
|
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
config NFT_LOG
|
|
|
|
|
tristate "Netfilter nf_tables log module"
|
2013-12-30 14:09:18 +00:00
|
|
|
help
|
|
|
|
|
This option adds the "log" expression that you can use to log
|
|
|
|
|
packets matching some criteria.
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
|
|
|
|
|
config NFT_LIMIT
|
|
|
|
|
tristate "Netfilter nf_tables limit module"
|
2013-12-30 14:09:18 +00:00
|
|
|
help
|
|
|
|
|
This option adds the "limit" expression that you can use to
|
|
|
|
|
ratelimit rule matchings.
|
netfilter: add nftables
This patch adds nftables which is the intended successor of iptables.
This packet filtering framework reuses the existing netfilter hooks,
the connection tracking system, the NAT subsystem, the transparent
proxying engine, the logging infrastructure and the userspace packet
queueing facilities.
In a nutshell, nftables provides a pseudo-state machine with 4 general
purpose registers of 128 bits and 1 specific purpose register to store
verdicts. This pseudo-machine comes with an extensible instruction set,
a.k.a. "expressions" in the nftables jargon. The expressions included
in this patch provide the basic functionality, they are:
* bitwise: to perform bitwise operations.
* byteorder: to change from host/network endianess.
* cmp: to compare data with the content of the registers.
* counter: to enable counters on rules.
* ct: to store conntrack keys into register.
* exthdr: to match IPv6 extension headers.
* immediate: to load data into registers.
* limit: to limit matching based on packet rate.
* log: to log packets.
* meta: to match metainformation that usually comes with the skbuff.
* nat: to perform Network Address Translation.
* payload: to fetch data from the packet payload and store it into
registers.
* reject (IPv4 only): to explicitly close connection, eg. TCP RST.
Using this instruction-set, the userspace utility 'nft' can transform
the rules expressed in human-readable text representation (using a
new syntax, inspired by tcpdump) to nftables bytecode.
nftables also inherits the table, chain and rule objects from
iptables, but in a more configurable way, and it also includes the
original datatype-agnostic set infrastructure with mapping support.
This set infrastructure is enhanced in the follow up patch (netfilter:
nf_tables: add netlink set API).
This patch includes the following components:
* the netlink API: net/netfilter/nf_tables_api.c and
include/uapi/netfilter/nf_tables.h
* the packet filter core: net/netfilter/nf_tables_core.c
* the expressions (described above): net/netfilter/nft_*.c
* the filter tables: arp, IPv4, IPv6 and bridge:
net/ipv4/netfilter/nf_tables_ipv4.c
net/ipv6/netfilter/nf_tables_ipv6.c
net/ipv4/netfilter/nf_tables_arp.c
net/bridge/netfilter/nf_tables_bridge.c
* the NAT table (IPv4 only):
net/ipv4/netfilter/nf_table_nat_ipv4.c
* the route table (similar to mangle):
net/ipv4/netfilter/nf_table_route_ipv4.c
net/ipv6/netfilter/nf_table_route_ipv6.c
* internal definitions under:
include/net/netfilter/nf_tables.h
include/net/netfilter/nf_tables_core.h
* It also includes an skeleton expression:
net/netfilter/nft_expr_template.c
and the preliminary implementation of the meta target
net/netfilter/nft_meta_target.c
It also includes a change in struct nf_hook_ops to add a new
pointer to store private data to the hook, that is used to store
the rule list per chain.
This patch is based on the patch from Patrick McHardy, plus merged
accumulated cleanups, fixes and small enhancements to the nftables
code that has been done since 2009, which are:
From Patrick McHardy:
* nf_tables: adjust netlink handler function signatures
* nf_tables: only retry table lookup after successful table module load
* nf_tables: fix event notification echo and avoid unnecessary messages
* nft_ct: add l3proto support
* nf_tables: pass expression context to nft_validate_data_load()
* nf_tables: remove redundant definition
* nft_ct: fix maxattr initialization
* nf_tables: fix invalid event type in nf_tables_getrule()
* nf_tables: simplify nft_data_init() usage
* nf_tables: build in more core modules
* nf_tables: fix double lookup expression unregistation
* nf_tables: move expression initialization to nf_tables_core.c
* nf_tables: build in payload module
* nf_tables: use NFPROTO constants
* nf_tables: rename pid variables to portid
* nf_tables: save 48 bits per rule
* nf_tables: introduce chain rename
* nf_tables: check for duplicate names on chain rename
* nf_tables: remove ability to specify handles for new rules
* nf_tables: return error for rule change request
* nf_tables: return error for NLM_F_REPLACE without rule handle
* nf_tables: include NLM_F_APPEND/NLM_F_REPLACE flags in rule notification
* nf_tables: fix NLM_F_MULTI usage in netlink notifications
* nf_tables: include NLM_F_APPEND in rule dumps
From Pablo Neira Ayuso:
* nf_tables: fix stack overflow in nf_tables_newrule
* nf_tables: nft_ct: fix compilation warning
* nf_tables: nft_ct: fix crash with invalid packets
* nft_log: group and qthreshold are 2^16
* nf_tables: nft_meta: fix socket uid,gid handling
* nft_counter: allow to restore counters
* nf_tables: fix module autoload
* nf_tables: allow to remove all rules placed in one chain
* nf_tables: use 64-bits rule handle instead of 16-bits
* nf_tables: fix chain after rule deletion
* nf_tables: improve deletion performance
* nf_tables: add missing code in route chain type
* nf_tables: rise maximum number of expressions from 12 to 128
* nf_tables: don't delete table if in use
* nf_tables: fix basechain release
From Tomasz Bursztyka:
* nf_tables: Add support for changing users chain's name
* nf_tables: Change chain's name to be fixed sized
* nf_tables: Add support for replacing a rule by another one
* nf_tables: Update uapi nftables netlink header documentation
From Florian Westphal:
* nft_log: group is u16, snaplen u32
From Phil Oester:
* nf_tables: operational limit match
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-10-14 09:00:02 +00:00
|
|
|
|
2014-09-08 11:45:00 +00:00
|
|
|
config NFT_MASQ
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on NF_NAT
|
2019-02-28 11:02:51 +00:00
|
|
|
select NF_NAT_MASQUERADE
|
2014-09-08 11:45:00 +00:00
|
|
|
tristate "Netfilter nf_tables masquerade support"
|
|
|
|
|
help
|
|
|
|
|
This option adds the "masquerade" expression that you can use
|
|
|
|
|
to perform NAT in the masquerade flavour.
|
|
|
|
|
|
2014-10-17 10:39:09 +00:00
|
|
|
config NFT_REDIR
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on NF_NAT
|
|
|
|
|
tristate "Netfilter nf_tables redirect support"
|
2019-02-28 11:02:50 +00:00
|
|
|
select NF_NAT_REDIRECT
|
2014-10-17 10:39:09 +00:00
|
|
|
help
|
|
|
|
|
This options adds the "redirect" expression that you can use
|
|
|
|
|
to perform NAT in the redirect flavour.
|
|
|
|
|
|
2013-10-10 11:39:19 +00:00
|
|
|
config NFT_NAT
|
|
|
|
|
depends on NF_CONNTRACK
|
2014-08-11 16:21:50 +00:00
|
|
|
select NF_NAT
|
2019-02-28 11:02:52 +00:00
|
|
|
depends on NF_TABLES_IPV4 || NF_TABLES_IPV6
|
2013-10-10 11:39:19 +00:00
|
|
|
tristate "Netfilter nf_tables nat module"
|
2013-12-30 14:09:18 +00:00
|
|
|
help
|
|
|
|
|
This option adds the "nat" expression that you can use to perform
|
|
|
|
|
typical Network Address Translation (NAT) packet transformations.
|
2013-10-10 11:39:19 +00:00
|
|
|
|
2018-08-02 18:51:39 +00:00
|
|
|
config NFT_TUNNEL
|
|
|
|
|
tristate "Netfilter nf_tables tunnel module"
|
|
|
|
|
help
|
|
|
|
|
This option adds the "tunnel" expression that you can use to set
|
|
|
|
|
tunneling policies.
|
|
|
|
|
|
2016-11-27 23:05:38 +00:00
|
|
|
config NFT_OBJREF
|
|
|
|
|
tristate "Netfilter nf_tables stateful object reference module"
|
|
|
|
|
help
|
|
|
|
|
This option adds the "objref" expression that allows you to refer to
|
|
|
|
|
stateful objects, such as counters and quotas.
|
|
|
|
|
|
2013-12-05 23:24:13 +00:00
|
|
|
config NFT_QUEUE
|
|
|
|
|
depends on NETFILTER_NETLINK_QUEUE
|
|
|
|
|
tristate "Netfilter nf_tables queue module"
|
|
|
|
|
help
|
|
|
|
|
This is required if you intend to use the userspace queueing
|
|
|
|
|
infrastructure (also known as NFQUEUE) from nftables.
|
|
|
|
|
|
2016-08-17 23:46:06 +00:00
|
|
|
config NFT_QUOTA
|
|
|
|
|
tristate "Netfilter nf_tables quota module"
|
|
|
|
|
help
|
|
|
|
|
This option adds the "quota" expression that you can use to match
|
|
|
|
|
enforce bytes quotas.
|
|
|
|
|
|
2013-12-29 11:28:14 +00:00
|
|
|
config NFT_REJECT
|
|
|
|
|
default m if NETFILTER_ADVANCED=n
|
|
|
|
|
tristate "Netfilter nf_tables reject support"
|
2018-04-09 10:53:12 +00:00
|
|
|
depends on !NF_TABLES_INET || (IPV6!=m || m)
|
2013-12-30 14:09:18 +00:00
|
|
|
help
|
|
|
|
|
This option adds the "reject" expression that you can use to
|
|
|
|
|
explicitly deny and notify via TCP reset/ICMP informational errors
|
|
|
|
|
unallowed traffic.
|
2013-10-10 11:39:19 +00:00
|
|
|
|
2014-02-05 15:03:39 +00:00
|
|
|
config NFT_REJECT_INET
|
|
|
|
|
depends on NF_TABLES_INET
|
|
|
|
|
default NFT_REJECT
|
|
|
|
|
tristate
|
|
|
|
|
|
2013-10-13 22:06:06 +00:00
|
|
|
config NFT_COMPAT
|
|
|
|
|
depends on NETFILTER_XTABLES
|
|
|
|
|
tristate "Netfilter x_tables over nf_tables module"
|
|
|
|
|
help
|
|
|
|
|
This is required if you intend to use any of existing
|
|
|
|
|
x_tables match/target extensions over the nf_tables
|
|
|
|
|
framework.
|
|
|
|
|
|
2016-08-11 16:02:07 +00:00
|
|
|
config NFT_HASH
|
|
|
|
|
tristate "Netfilter nf_tables hash module"
|
|
|
|
|
help
|
|
|
|
|
This option adds the "hash" expression that you can use to perform
|
|
|
|
|
a hash operation on registers.
|
|
|
|
|
|
2016-10-24 14:56:40 +00:00
|
|
|
config NFT_FIB
|
|
|
|
|
tristate
|
|
|
|
|
|
|
|
|
|
config NFT_FIB_INET
|
|
|
|
|
depends on NF_TABLES_INET
|
|
|
|
|
depends on NFT_FIB_IPV4
|
|
|
|
|
depends on NFT_FIB_IPV6
|
|
|
|
|
tristate "Netfilter nf_tables fib inet support"
|
|
|
|
|
help
|
|
|
|
|
This option allows using the FIB expression from the inet table.
|
|
|
|
|
The lookup will be delegated to the IPv4 or IPv6 FIB depending
|
|
|
|
|
on the protocol of the packet.
|
|
|
|
|
|
2018-09-03 16:09:40 +00:00
|
|
|
config NFT_XFRM
|
|
|
|
|
tristate "Netfilter nf_tables xfrm/IPSec security association matching"
|
|
|
|
|
depends on XFRM
|
|
|
|
|
help
|
|
|
|
|
This option adds an expression that you can use to extract properties
|
|
|
|
|
of a packets security association.
|
|
|
|
|
|
2018-05-28 07:15:33 +00:00
|
|
|
config NFT_SOCKET
|
|
|
|
|
tristate "Netfilter nf_tables socket match support"
|
|
|
|
|
depends on IPV6 || IPV6=n
|
|
|
|
|
select NF_SOCKET_IPV4
|
2018-07-10 14:01:28 +00:00
|
|
|
select NF_SOCKET_IPV6 if NF_TABLES_IPV6
|
2018-05-28 07:15:33 +00:00
|
|
|
help
|
|
|
|
|
This option allows matching for the presence or absence of a
|
|
|
|
|
corresponding socket and its attributes.
|
|
|
|
|
|
2018-07-24 23:32:46 +00:00
|
|
|
config NFT_OSF
|
|
|
|
|
tristate "Netfilter nf_tables passive OS fingerprint support"
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_NETLINK_OSF
|
|
|
|
|
help
|
|
|
|
|
This option allows matching packets from an specific OS.
|
|
|
|
|
|
2018-07-30 09:07:32 +00:00
|
|
|
config NFT_TPROXY
|
|
|
|
|
tristate "Netfilter nf_tables tproxy support"
|
|
|
|
|
depends on IPV6 || IPV6=n
|
|
|
|
|
select NF_DEFRAG_IPV4
|
|
|
|
|
select NF_DEFRAG_IPV6 if NF_TABLES_IPV6
|
|
|
|
|
select NF_TPROXY_IPV4
|
|
|
|
|
select NF_TPROXY_IPV6 if NF_TABLES_IPV6
|
|
|
|
|
help
|
|
|
|
|
This makes transparent proxy support available in nftables.
|
|
|
|
|
|
2019-06-26 10:59:19 +00:00
|
|
|
config NFT_SYNPROXY
|
|
|
|
|
tristate "Netfilter nf_tables SYNPROXY expression support"
|
|
|
|
|
depends on NF_CONNTRACK && NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_SYNPROXY
|
|
|
|
|
select SYN_COOKIES
|
|
|
|
|
help
|
|
|
|
|
The SYNPROXY expression allows you to intercept TCP connections and
|
|
|
|
|
establish them using syncookies before they are passed on to the
|
|
|
|
|
server. This allows to avoid conntrack and server resource usage
|
|
|
|
|
during SYN-flood attacks.
|
|
|
|
|
|
2016-01-03 20:02:18 +00:00
|
|
|
if NF_TABLES_NETDEV
|
|
|
|
|
|
|
|
|
|
config NF_DUP_NETDEV
|
|
|
|
|
tristate "Netfilter packet duplication support"
|
|
|
|
|
help
|
|
|
|
|
This option enables the generic packet duplication infrastructure
|
|
|
|
|
for Netfilter.
|
|
|
|
|
|
|
|
|
|
config NFT_DUP_NETDEV
|
|
|
|
|
tristate "Netfilter nf_tables netdev packet duplication support"
|
|
|
|
|
select NF_DUP_NETDEV
|
|
|
|
|
help
|
|
|
|
|
This option enables packet duplication for the "netdev" family.
|
|
|
|
|
|
2015-11-25 12:39:38 +00:00
|
|
|
config NFT_FWD_NETDEV
|
|
|
|
|
tristate "Netfilter nf_tables netdev packet forwarding support"
|
|
|
|
|
select NF_DUP_NETDEV
|
|
|
|
|
help
|
|
|
|
|
This option enables packet forwarding for the "netdev" family.
|
|
|
|
|
|
2017-07-20 23:54:38 +00:00
|
|
|
config NFT_FIB_NETDEV
|
|
|
|
|
depends on NFT_FIB_IPV4
|
|
|
|
|
depends on NFT_FIB_IPV6
|
|
|
|
|
tristate "Netfilter nf_tables netdev fib lookups support"
|
|
|
|
|
help
|
|
|
|
|
This option allows using the FIB expression from the netdev table.
|
|
|
|
|
The lookup will be delegated to the IPv4 or IPv6 FIB depending
|
|
|
|
|
on the protocol of the packet.
|
|
|
|
|
|
2020-10-22 19:43:53 +00:00
|
|
|
config NFT_REJECT_NETDEV
|
|
|
|
|
depends on NFT_REJECT_IPV4
|
|
|
|
|
depends on NFT_REJECT_IPV6
|
|
|
|
|
tristate "Netfilter nf_tables netdev REJECT support"
|
|
|
|
|
help
|
|
|
|
|
This option enables the REJECT support from the netdev table.
|
|
|
|
|
The return packet generation will be delegated to the IPv4
|
|
|
|
|
or IPv6 ICMP or TCP RST implementation depending on the
|
|
|
|
|
protocol of the packet.
|
|
|
|
|
|
2016-01-03 20:02:18 +00:00
|
|
|
endif # NF_TABLES_NETDEV
|
|
|
|
|
|
2015-03-05 13:56:15 +00:00
|
|
|
endif # NF_TABLES
|
|
|
|
|
|
2018-01-07 00:04:22 +00:00
|
|
|
config NF_FLOW_TABLE_INET
|
|
|
|
|
tristate "Netfilter flow table mixed IPv4/IPv6 module"
|
2018-02-26 09:15:16 +00:00
|
|
|
depends on NF_FLOW_TABLE
|
2018-01-07 00:04:22 +00:00
|
|
|
help
|
2019-09-23 15:52:42 +00:00
|
|
|
This option adds the flow table mixed IPv4/IPv6 support.
|
2018-01-07 00:04:22 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here.
|
|
|
|
|
|
2018-01-07 00:04:11 +00:00
|
|
|
config NF_FLOW_TABLE
|
|
|
|
|
tristate "Netfilter flow table module"
|
2018-01-31 17:13:39 +00:00
|
|
|
depends on NETFILTER_INGRESS
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on NF_TABLES
|
2018-01-07 00:04:11 +00:00
|
|
|
help
|
|
|
|
|
This option adds the flow table core infrastructure.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XTABLES
|
|
|
|
|
tristate "Netfilter Xtables support (required for ip_tables)"
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
This is required if you intend to use any of ip_tables,
|
|
|
|
|
ip6_tables or arp_tables.
|
|
|
|
|
|
2008-10-08 09:35:18 +00:00
|
|
|
if NETFILTER_XTABLES
|
|
|
|
|
|
2021-04-26 10:14:40 +00:00
|
|
|
config NETFILTER_XTABLES_COMPAT
|
|
|
|
|
bool "Netfilter Xtables 32bit support"
|
|
|
|
|
depends on COMPAT
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
This option provides a translation layer to run 32bit arp,ip(6),ebtables
|
|
|
|
|
binaries on 64bit kernels.
|
|
|
|
|
|
|
|
|
|
If unsure, say N.
|
|
|
|
|
|
2009-02-28 02:23:57 +00:00
|
|
|
comment "Xtables combined modules"
|
|
|
|
|
|
|
|
|
|
config NETFILTER_XT_MARK
|
|
|
|
|
tristate 'nfmark target and match support'
|
|
|
|
|
default m if NETFILTER_ADVANCED=n
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2009-02-28 02:23:57 +00:00
|
|
|
This option adds the "MARK" target and "mark" match.
|
|
|
|
|
|
|
|
|
|
Netfilter mark matching allows you to match packets based on the
|
|
|
|
|
"nfmark" value in the packet.
|
|
|
|
|
The target allows you to create rules in the "mangle" table which alter
|
|
|
|
|
the netfilter mark (nfmark) field associated with the packet.
|
|
|
|
|
|
2016-06-30 09:46:28 +00:00
|
|
|
Prior to routing, the nfmark can influence the routing method and can
|
|
|
|
|
also be used by other subsystems to change their behavior.
|
2009-02-28 02:23:57 +00:00
|
|
|
|
2010-02-26 13:20:32 +00:00
|
|
|
config NETFILTER_XT_CONNMARK
|
|
|
|
|
tristate 'ctmark target and match support'
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NF_CONNTRACK_MARK
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2010-02-26 13:20:32 +00:00
|
|
|
This option adds the "CONNMARK" target and "connmark" match.
|
|
|
|
|
|
|
|
|
|
Netfilter allows you to store a mark value per connection (a.k.a.
|
|
|
|
|
ctmark), similarly to the packet mark (nfmark). Using this
|
|
|
|
|
target and match, you can set and match on this mark.
|
|
|
|
|
|
2011-02-01 14:56:00 +00:00
|
|
|
config NETFILTER_XT_SET
|
|
|
|
|
tristate 'set target and match support'
|
|
|
|
|
depends on IP_SET
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This option adds the "SET" target and "set" match.
|
|
|
|
|
|
|
|
|
|
Using this target and match, you can add/delete and match
|
|
|
|
|
elements in the sets created by ipset(8).
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
# alphabetically ordered list of targets
|
|
|
|
|
|
2010-02-26 13:14:22 +00:00
|
|
|
comment "Xtables targets"
|
|
|
|
|
|
2011-01-16 17:10:28 +00:00
|
|
|
config NETFILTER_XT_TARGET_AUDIT
|
|
|
|
|
tristate "AUDIT target support"
|
|
|
|
|
depends on AUDIT
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2011-01-16 17:10:28 +00:00
|
|
|
This option adds a 'AUDIT' target, which can be used to create
|
|
|
|
|
audit records for packets dropped/accepted.
|
|
|
|
|
|
|
|
|
|
To compileit as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2010-07-15 15:20:46 +00:00
|
|
|
config NETFILTER_XT_TARGET_CHECKSUM
|
|
|
|
|
tristate "CHECKSUM target support"
|
|
|
|
|
depends on IP_NF_MANGLE || IP6_NF_MANGLE
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2010-07-15 15:20:46 +00:00
|
|
|
This option adds a `CHECKSUM' target, which can be used in the iptables mangle
|
2018-08-22 09:33:27 +00:00
|
|
|
table to work around buggy DHCP clients in virtualized environments.
|
2010-07-15 15:20:46 +00:00
|
|
|
|
2018-08-22 09:33:27 +00:00
|
|
|
Some old DHCP clients drop packets because they are not aware
|
|
|
|
|
that the checksum would normally be offloaded to hardware and
|
|
|
|
|
thus should be considered valid.
|
|
|
|
|
This target can be used to fill in the checksum using iptables
|
|
|
|
|
when such packets are sent via a virtual network device.
|
2010-07-15 15:20:46 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_TARGET_CLASSIFY
|
|
|
|
|
tristate '"CLASSIFY" target support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `CLASSIFY' target, which enables the user to set
|
|
|
|
|
the priority of a packet. Some qdiscs can use this value for
|
|
|
|
|
classification, among these are:
|
|
|
|
|
|
2021-05-17 09:58:50 +00:00
|
|
|
atm, cbq, dsmark, pfifo_fast, htb, prio
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
|
|
|
|
config NETFILTER_XT_TARGET_CONNMARK
|
|
|
|
|
tristate '"CONNMARK" target support'
|
2007-03-14 23:37:25 +00:00
|
|
|
depends on NF_CONNTRACK
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2010-02-26 13:20:32 +00:00
|
|
|
select NETFILTER_XT_CONNMARK
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2010-02-26 13:20:32 +00:00
|
|
|
This is a backwards-compat option for the user's convenience
|
|
|
|
|
(e.g. when running oldconfig). It selects
|
|
|
|
|
CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
2008-10-08 09:35:17 +00:00
|
|
|
config NETFILTER_XT_TARGET_CONNSECMARK
|
|
|
|
|
tristate '"CONNSECMARK" target support'
|
2008-10-08 09:35:18 +00:00
|
|
|
depends on NF_CONNTRACK && NF_CONNTRACK_SECMARK
|
2008-10-08 09:35:17 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
|
|
|
|
help
|
|
|
|
|
The CONNSECMARK target copies security markings from packets
|
|
|
|
|
to connections, and restores security markings from connections
|
|
|
|
|
to packets (if the packets are not already marked). This would
|
|
|
|
|
normally be used in conjunction with the SECMARK target.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2010-02-03 16:17:06 +00:00
|
|
|
config NETFILTER_XT_TARGET_CT
|
|
|
|
|
tristate '"CT" target support'
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on IP_NF_RAW || IP6_NF_RAW
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This options adds a `CT' target, which allows to specify initial
|
|
|
|
|
connection tracking parameters like events to be delivered and
|
|
|
|
|
the helper to be used.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-08-22 07:30:26 +00:00
|
|
|
config NETFILTER_XT_TARGET_DSCP
|
2007-12-05 07:38:13 +00:00
|
|
|
tristate '"DSCP" and "TOS" target support'
|
2006-08-22 07:30:26 +00:00
|
|
|
depends on IP_NF_MANGLE || IP6_NF_MANGLE
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-08-22 07:30:26 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `DSCP' target, which allows you to manipulate
|
|
|
|
|
the IPv4/IPv6 header DSCP field (differentiated services codepoint).
|
|
|
|
|
|
|
|
|
|
The DSCP field can have any value between 0x0 and 0x3f inclusive.
|
|
|
|
|
|
2007-12-05 07:38:13 +00:00
|
|
|
It also adds the "TOS" target, which allows you to create rules in
|
|
|
|
|
the "mangle" table which alter the Type Of Service field of an IPv4
|
2007-12-05 07:39:09 +00:00
|
|
|
or the Priority field of an IPv6 packet, prior to routing.
|
2007-12-05 07:38:13 +00:00
|
|
|
|
2006-08-22 07:30:26 +00:00
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2009-02-18 17:38:40 +00:00
|
|
|
config NETFILTER_XT_TARGET_HL
|
|
|
|
|
tristate '"HL" hoplimit target support'
|
|
|
|
|
depends on IP_NF_MANGLE || IP6_NF_MANGLE
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2009-02-18 17:38:40 +00:00
|
|
|
This option adds the "HL" (for IPv6) and "TTL" (for IPv4)
|
|
|
|
|
targets, which enable the user to change the
|
|
|
|
|
hoplimit/time-to-live value of the IP header.
|
|
|
|
|
|
|
|
|
|
While it is safe to decrement the hoplimit/TTL value, the
|
|
|
|
|
modules also allow to increment and set the hoplimit value of
|
|
|
|
|
the header to arbitrary values. This is EXTREMELY DANGEROUS
|
|
|
|
|
since you can easily create immortal packets that loop
|
|
|
|
|
forever on the network.
|
|
|
|
|
|
2012-05-02 07:49:47 +00:00
|
|
|
config NETFILTER_XT_TARGET_HMARK
|
|
|
|
|
tristate '"HMARK" target support'
|
2015-06-12 11:58:52 +00:00
|
|
|
depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
|
2012-05-02 07:49:47 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2012-05-02 07:49:47 +00:00
|
|
|
This option adds the "HMARK" target.
|
|
|
|
|
|
|
|
|
|
The target allows you to create rules in the "raw" and "mangle" tables
|
|
|
|
|
which set the skbuff mark by means of hash calculation within a given
|
2016-06-30 09:46:28 +00:00
|
|
|
range. The nfmark can influence the routing method and can also be used
|
|
|
|
|
by other subsystems to change their behaviour.
|
2012-05-02 07:49:47 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2010-06-15 13:04:00 +00:00
|
|
|
config NETFILTER_XT_TARGET_IDLETIMER
|
|
|
|
|
tristate "IDLETIMER target support"
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
|
|
|
|
|
This option adds the `IDLETIMER' target. Each matching packet
|
|
|
|
|
resets the timer associated with label specified when the rule is
|
|
|
|
|
added. When the timer expires, it triggers a sysfs notification.
|
|
|
|
|
The remaining time for expiration can be read via sysfs.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2009-02-20 09:55:14 +00:00
|
|
|
config NETFILTER_XT_TARGET_LED
|
|
|
|
|
tristate '"LED" target support'
|
2009-04-06 15:09:43 +00:00
|
|
|
depends on LEDS_CLASS && LEDS_TRIGGERS
|
2009-02-20 09:55:14 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This option adds a `LED' target, which allows you to blink LEDs in
|
|
|
|
|
response to particular packets passing through your machine.
|
|
|
|
|
|
|
|
|
|
This can be used to turn a spare LED into a network activity LED,
|
|
|
|
|
which only flashes in response to FTP transfers, for example. Or
|
|
|
|
|
you could have an LED which lights up for a minute or two every time
|
|
|
|
|
somebody connects to your machine via SSH.
|
|
|
|
|
|
|
|
|
|
You will need support for the "led" class to make this work.
|
|
|
|
|
|
|
|
|
|
To create an LED trigger for incoming SSH traffic:
|
|
|
|
|
iptables -A INPUT -p tcp --dport 22 -j LED --led-trigger-id ssh --led-delay 1000
|
|
|
|
|
|
|
|
|
|
Then attach the new trigger to an LED on your system:
|
|
|
|
|
echo netfilter-ssh > /sys/class/leds/<ledname>/trigger
|
|
|
|
|
|
|
|
|
|
For more information on the LEDs available on your system, see
|
2019-06-28 12:20:20 +00:00
|
|
|
Documentation/leds/leds-class.rst
|
2009-02-20 09:55:14 +00:00
|
|
|
|
2012-02-10 22:10:52 +00:00
|
|
|
config NETFILTER_XT_TARGET_LOG
|
|
|
|
|
tristate "LOG target support"
|
2021-03-25 17:25:05 +00:00
|
|
|
select NF_LOG_SYSLOG
|
2018-07-10 14:01:28 +00:00
|
|
|
select NF_LOG_IPV6 if IP6_NF_IPTABLES
|
2012-02-10 22:10:52 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
|
|
|
|
help
|
|
|
|
|
This option adds a `LOG' target, which allows you to create rules in
|
|
|
|
|
any iptables table which records the packet header to the syslog.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_TARGET_MARK
|
|
|
|
|
tristate '"MARK" target support'
|
2009-02-28 02:23:57 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_XT_MARK
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2009-02-28 02:23:57 +00:00
|
|
|
This is a backwards-compat option for the user's convenience
|
|
|
|
|
(e.g. when running oldconfig). It selects
|
|
|
|
|
CONFIG_NETFILTER_XT_MARK (combined mark/MARK module).
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
2014-09-04 07:47:21 +00:00
|
|
|
config NETFILTER_XT_NAT
|
|
|
|
|
tristate '"SNAT and DNAT" targets support'
|
|
|
|
|
depends on NF_NAT
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2014-09-04 07:47:21 +00:00
|
|
|
This option enables the SNAT and DNAT targets.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2012-09-21 09:37:59 +00:00
|
|
|
config NETFILTER_XT_TARGET_NETMAP
|
|
|
|
|
tristate '"NETMAP" target support'
|
|
|
|
|
depends on NF_NAT
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2012-09-21 09:37:59 +00:00
|
|
|
NETMAP is an implementation of static 1:1 NAT mapping of network
|
|
|
|
|
addresses. It maps the network address part, while keeping the host
|
|
|
|
|
address part intact.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-11-29 01:35:38 +00:00
|
|
|
config NETFILTER_XT_TARGET_NFLOG
|
|
|
|
|
tristate '"NFLOG" target support'
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2008-12-11 01:24:33 +00:00
|
|
|
select NETFILTER_NETLINK_LOG
|
2006-11-29 01:35:38 +00:00
|
|
|
help
|
|
|
|
|
This option enables the NFLOG target, which allows to LOG
|
2008-12-11 01:24:33 +00:00
|
|
|
messages through nfnetlink_log.
|
2006-11-29 01:35:38 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2008-10-08 09:35:17 +00:00
|
|
|
config NETFILTER_XT_TARGET_NFQUEUE
|
|
|
|
|
tristate '"NFQUEUE" target Support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2011-01-18 14:18:08 +00:00
|
|
|
select NETFILTER_NETLINK_QUEUE
|
2008-10-08 09:35:17 +00:00
|
|
|
help
|
|
|
|
|
This target replaced the old obsolete QUEUE target.
|
|
|
|
|
|
|
|
|
|
As opposed to QUEUE, it supports 65535 different queues,
|
|
|
|
|
not just one.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2012-12-20 01:54:51 +00:00
|
|
|
config NETFILTER_XT_TARGET_NOTRACK
|
|
|
|
|
tristate '"NOTRACK" target support (DEPRECATED)'
|
2013-01-02 16:30:01 +00:00
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on IP_NF_RAW || IP6_NF_RAW
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2012-12-20 01:54:51 +00:00
|
|
|
select NETFILTER_XT_TARGET_CT
|
|
|
|
|
|
2007-12-05 07:40:05 +00:00
|
|
|
config NETFILTER_XT_TARGET_RATEEST
|
|
|
|
|
tristate '"RATEEST" target support'
|
2008-01-15 07:30:56 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2007-12-05 07:40:05 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `RATEEST' target, which allows to measure
|
|
|
|
|
rates similar to TC estimators. The `rateest' match can be
|
|
|
|
|
used to match on the measured rates.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2012-09-21 09:41:34 +00:00
|
|
|
config NETFILTER_XT_TARGET_REDIRECT
|
|
|
|
|
tristate "REDIRECT target support"
|
|
|
|
|
depends on NF_NAT
|
2014-11-26 11:46:50 +00:00
|
|
|
select NF_NAT_REDIRECT
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2012-09-21 09:41:34 +00:00
|
|
|
REDIRECT is a special case of NAT: all incoming connections are
|
|
|
|
|
mapped onto the incoming interface's address, causing the packets to
|
|
|
|
|
come to the local machine instead of passing through. This is
|
|
|
|
|
useful for transparent proxies.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2019-04-09 08:44:07 +00:00
|
|
|
config NETFILTER_XT_TARGET_MASQUERADE
|
|
|
|
|
tristate "MASQUERADE target support"
|
|
|
|
|
depends on NF_NAT
|
|
|
|
|
default m if NETFILTER_ADVANCED=n
|
|
|
|
|
select NF_NAT_MASQUERADE
|
|
|
|
|
help
|
|
|
|
|
Masquerading is a special case of NAT: all outgoing connections are
|
|
|
|
|
changed to seem to come from a particular interface's address, and
|
|
|
|
|
if the interface goes down, those connections are lost. This is
|
|
|
|
|
only useful for dialup accounts with dynamic IP address (ie. your IP
|
|
|
|
|
address will be different on next dialup).
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2010-04-19 12:17:47 +00:00
|
|
|
config NETFILTER_XT_TARGET_TEE
|
2010-06-22 06:22:21 +00:00
|
|
|
tristate '"TEE" - packet cloning to alternate destination'
|
2010-04-19 12:17:47 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2015-06-12 11:58:52 +00:00
|
|
|
depends on IPV6 || IPV6=n
|
2010-05-14 20:52:30 +00:00
|
|
|
depends on !NF_CONNTRACK || NF_CONNTRACK
|
2019-03-13 21:15:59 +00:00
|
|
|
depends on IP6_NF_IPTABLES || !IP6_NF_IPTABLES
|
2015-05-31 15:54:44 +00:00
|
|
|
select NF_DUP_IPV4
|
2018-07-10 14:01:28 +00:00
|
|
|
select NF_DUP_IPV6 if IP6_NF_IPTABLES
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2010-04-19 12:17:47 +00:00
|
|
|
This option adds a "TEE" target with which a packet can be cloned and
|
|
|
|
|
this clone be rerouted to another nexthop.
|
|
|
|
|
|
2008-10-08 09:35:12 +00:00
|
|
|
config NETFILTER_XT_TARGET_TPROXY
|
2013-07-29 13:41:52 +00:00
|
|
|
tristate '"TPROXY" target transparent proxying support'
|
2008-10-08 09:35:12 +00:00
|
|
|
depends on NETFILTER_XTABLES
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2015-06-12 11:58:52 +00:00
|
|
|
depends on IPV6 || IPV6=n
|
|
|
|
|
depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
|
2013-07-29 13:41:52 +00:00
|
|
|
depends on IP_NF_MANGLE
|
2008-10-08 09:35:12 +00:00
|
|
|
select NF_DEFRAG_IPV4
|
2015-11-10 12:22:15 +00:00
|
|
|
select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES != n
|
2018-06-01 18:44:56 +00:00
|
|
|
select NF_TPROXY_IPV4
|
|
|
|
|
select NF_TPROXY_IPV6 if IP6_NF_IPTABLES
|
2008-10-08 09:35:12 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `TPROXY' target, which is somewhat similar to
|
|
|
|
|
REDIRECT. It can only be used in the mangle table and is useful
|
|
|
|
|
to redirect traffic to a transparent proxy. It does _not_ depend
|
|
|
|
|
on Netfilter connection tracking and NAT, unlike REDIRECT.
|
2013-07-29 13:41:52 +00:00
|
|
|
For it to work you will have to configure certain iptables rules
|
|
|
|
|
and use policy routing. For more information on how to set it up
|
2020-04-30 16:04:32 +00:00
|
|
|
see Documentation/networking/tproxy.rst.
|
2008-10-08 09:35:12 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2007-07-08 05:21:23 +00:00
|
|
|
config NETFILTER_XT_TARGET_TRACE
|
|
|
|
|
tristate '"TRACE" target support'
|
|
|
|
|
depends on IP_NF_RAW || IP6_NF_RAW
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2007-07-08 05:21:23 +00:00
|
|
|
help
|
|
|
|
|
The TRACE target allows you to mark packets so that the kernel
|
|
|
|
|
will log every rule which match the packets as those traverse
|
|
|
|
|
the tables, chains, rules.
|
|
|
|
|
|
|
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
2007-07-08 05:21:23 +00:00
|
|
|
|
2006-06-09 07:30:57 +00:00
|
|
|
config NETFILTER_XT_TARGET_SECMARK
|
|
|
|
|
tristate '"SECMARK" target support'
|
2008-10-08 09:35:18 +00:00
|
|
|
depends on NETWORK_SECMARK
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2006-06-09 07:30:57 +00:00
|
|
|
help
|
|
|
|
|
The SECMARK target allows security marking of network
|
|
|
|
|
packets, for use with security subsystems.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2007-02-07 23:09:46 +00:00
|
|
|
config NETFILTER_XT_TARGET_TCPMSS
|
|
|
|
|
tristate '"TCPMSS" target support'
|
2015-06-12 11:58:52 +00:00
|
|
|
depends on IPV6 || IPV6=n
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2007-02-07 23:09:46 +00:00
|
|
|
This option adds a `TCPMSS' target, which allows you to alter the
|
|
|
|
|
MSS value of TCP SYN packets, to control the maximum size for that
|
|
|
|
|
connection (usually limiting it to your outgoing interface's MTU
|
|
|
|
|
minus 40).
|
|
|
|
|
|
|
|
|
|
This is used to overcome criminally braindead ISPs or servers which
|
|
|
|
|
block ICMP Fragmentation Needed packets. The symptoms of this
|
|
|
|
|
problem are that everything works fine from your Linux
|
|
|
|
|
firewall/router, but machines behind it can never exchange large
|
|
|
|
|
packets:
|
|
|
|
|
1) Web browsers connect, then hang with no data received.
|
|
|
|
|
2) Small mail works fine, but large emails hang.
|
|
|
|
|
3) ssh works fine, but scp hangs after initial handshaking.
|
|
|
|
|
|
|
|
|
|
Workaround: activate this option and add a rule to your firewall
|
|
|
|
|
configuration like:
|
|
|
|
|
|
|
|
|
|
iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
|
|
|
|
|
-j TCPMSS --clamp-mss-to-pmtu
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2007-12-05 07:21:50 +00:00
|
|
|
config NETFILTER_XT_TARGET_TCPOPTSTRIP
|
2012-10-02 18:19:54 +00:00
|
|
|
tristate '"TCPOPTSTRIP" target support'
|
2007-12-05 07:21:50 +00:00
|
|
|
depends on IP_NF_MANGLE || IP6_NF_MANGLE
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2007-12-05 07:21:50 +00:00
|
|
|
help
|
|
|
|
|
This option adds a "TCPOPTSTRIP" target, which allows you to strip
|
|
|
|
|
TCP options from TCP packets.
|
|
|
|
|
|
2010-02-26 13:14:22 +00:00
|
|
|
# alphabetically ordered list of matches
|
|
|
|
|
|
|
|
|
|
comment "Xtables matches"
|
|
|
|
|
|
2011-03-15 19:16:20 +00:00
|
|
|
config NETFILTER_XT_MATCH_ADDRTYPE
|
|
|
|
|
tristate '"addrtype" address type match support'
|
2015-01-20 23:53:50 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2011-03-15 19:16:20 +00:00
|
|
|
This option allows you to match what routing thinks of an address,
|
|
|
|
|
eg. UNICAST, LOCAL, BROADCAST, ...
|
|
|
|
|
|
|
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
2011-03-15 19:16:20 +00:00
|
|
|
|
2013-01-18 07:17:30 +00:00
|
|
|
config NETFILTER_XT_MATCH_BPF
|
|
|
|
|
tristate '"bpf" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
BPF matching applies a linux socket filter to each packet and
|
|
|
|
|
accepts those for which the filter returns non-zero.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
netfilter: x_tables: lightweight process control group matching
It would be useful e.g. in a server or desktop environment to have
a facility in the notion of fine-grained "per application" or "per
application group" firewall policies. Probably, users in the mobile,
embedded area (e.g. Android based) with different security policy
requirements for application groups could have great benefit from
that as well. For example, with a little bit of configuration effort,
an admin could whitelist well-known applications, and thus block
otherwise unwanted "hard-to-track" applications like [1] from a
user's machine. Blocking is just one example, but it is not limited
to that, meaning we can have much different scenarios/policies that
netfilter allows us than just blocking, e.g. fine grained settings
where applications are allowed to connect/send traffic to, application
traffic marking/conntracking, application-specific packet mangling,
and so on.
Implementation of PID-based matching would not be appropriate
as they frequently change, and child tracking would make that
even more complex and ugly. Cgroups would be a perfect candidate
for accomplishing that as they associate a set of tasks with a
set of parameters for one or more subsystems, in our case the
netfilter subsystem, which, of course, can be combined with other
cgroup subsystems into something more complex if needed.
As mentioned, to overcome this constraint, such processes could
be placed into one or multiple cgroups where different fine-grained
rules can be defined depending on the application scenario, while
e.g. everything else that is not part of that could be dropped (or
vice versa), thus making life harder for unwanted processes to
communicate to the outside world. So, we make use of cgroups here
to track jobs and limit their resources in terms of iptables
policies; in other words, limiting, tracking, etc what they are
allowed to communicate.
In our case we're working on outgoing traffic based on which local
socket that originated from. Also, one doesn't even need to have
an a-prio knowledge of the application internals regarding their
particular use of ports or protocols. Matching is *extremly*
lightweight as we just test for the sk_classid marker of sockets,
originating from net_cls. net_cls and netfilter do not contradict
each other; in fact, each construct can live as standalone or they
can be used in combination with each other, which is perfectly fine,
plus it serves Tejun's requirement to not introduce a new cgroups
subsystem. Through this, we result in a very minimal and efficient
module, and don't add anything except netfilter code.
One possible, minimal usage example (many other iptables options
can be applied obviously):
1) Configuring cgroups if not already done, e.g.:
mkdir /sys/fs/cgroup/net_cls
mount -t cgroup -o net_cls net_cls /sys/fs/cgroup/net_cls
mkdir /sys/fs/cgroup/net_cls/0
echo 1 > /sys/fs/cgroup/net_cls/0/net_cls.classid
(resp. a real flow handle id for tc)
2) Configuring netfilter (iptables-nftables), e.g.:
iptables -A OUTPUT -m cgroup ! --cgroup 1 -j DROP
3) Running applications, e.g.:
ping 208.67.222.222 <pid:1799>
echo 1799 > /sys/fs/cgroup/net_cls/0/tasks
64 bytes from 208.67.222.222: icmp_seq=44 ttl=49 time=11.9 ms
[...]
ping 208.67.220.220 <pid:1804>
ping: sendmsg: Operation not permitted
[...]
echo 1804 > /sys/fs/cgroup/net_cls/0/tasks
64 bytes from 208.67.220.220: icmp_seq=89 ttl=56 time=19.0 ms
[...]
Of course, real-world deployments would make use of cgroups user
space toolsuite, or own custom policy daemons dynamically moving
applications from/to various cgroups.
[1] http://www.blackhat.com/presentations/bh-europe-06/bh-eu-06-biondi/bh-eu-06-biondi-up.pdf
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: cgroups@vger.kernel.org
Acked-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-12-29 17:27:12 +00:00
|
|
|
config NETFILTER_XT_MATCH_CGROUP
|
|
|
|
|
tristate '"control group" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
depends on CGROUPS
|
|
|
|
|
select CGROUP_NET_CLASSID
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
netfilter: x_tables: lightweight process control group matching
It would be useful e.g. in a server or desktop environment to have
a facility in the notion of fine-grained "per application" or "per
application group" firewall policies. Probably, users in the mobile,
embedded area (e.g. Android based) with different security policy
requirements for application groups could have great benefit from
that as well. For example, with a little bit of configuration effort,
an admin could whitelist well-known applications, and thus block
otherwise unwanted "hard-to-track" applications like [1] from a
user's machine. Blocking is just one example, but it is not limited
to that, meaning we can have much different scenarios/policies that
netfilter allows us than just blocking, e.g. fine grained settings
where applications are allowed to connect/send traffic to, application
traffic marking/conntracking, application-specific packet mangling,
and so on.
Implementation of PID-based matching would not be appropriate
as they frequently change, and child tracking would make that
even more complex and ugly. Cgroups would be a perfect candidate
for accomplishing that as they associate a set of tasks with a
set of parameters for one or more subsystems, in our case the
netfilter subsystem, which, of course, can be combined with other
cgroup subsystems into something more complex if needed.
As mentioned, to overcome this constraint, such processes could
be placed into one or multiple cgroups where different fine-grained
rules can be defined depending on the application scenario, while
e.g. everything else that is not part of that could be dropped (or
vice versa), thus making life harder for unwanted processes to
communicate to the outside world. So, we make use of cgroups here
to track jobs and limit their resources in terms of iptables
policies; in other words, limiting, tracking, etc what they are
allowed to communicate.
In our case we're working on outgoing traffic based on which local
socket that originated from. Also, one doesn't even need to have
an a-prio knowledge of the application internals regarding their
particular use of ports or protocols. Matching is *extremly*
lightweight as we just test for the sk_classid marker of sockets,
originating from net_cls. net_cls and netfilter do not contradict
each other; in fact, each construct can live as standalone or they
can be used in combination with each other, which is perfectly fine,
plus it serves Tejun's requirement to not introduce a new cgroups
subsystem. Through this, we result in a very minimal and efficient
module, and don't add anything except netfilter code.
One possible, minimal usage example (many other iptables options
can be applied obviously):
1) Configuring cgroups if not already done, e.g.:
mkdir /sys/fs/cgroup/net_cls
mount -t cgroup -o net_cls net_cls /sys/fs/cgroup/net_cls
mkdir /sys/fs/cgroup/net_cls/0
echo 1 > /sys/fs/cgroup/net_cls/0/net_cls.classid
(resp. a real flow handle id for tc)
2) Configuring netfilter (iptables-nftables), e.g.:
iptables -A OUTPUT -m cgroup ! --cgroup 1 -j DROP
3) Running applications, e.g.:
ping 208.67.222.222 <pid:1799>
echo 1799 > /sys/fs/cgroup/net_cls/0/tasks
64 bytes from 208.67.222.222: icmp_seq=44 ttl=49 time=11.9 ms
[...]
ping 208.67.220.220 <pid:1804>
ping: sendmsg: Operation not permitted
[...]
echo 1804 > /sys/fs/cgroup/net_cls/0/tasks
64 bytes from 208.67.220.220: icmp_seq=89 ttl=56 time=19.0 ms
[...]
Of course, real-world deployments would make use of cgroups user
space toolsuite, or own custom policy daemons dynamically moving
applications from/to various cgroups.
[1] http://www.blackhat.com/presentations/bh-europe-06/bh-eu-06-biondi/bh-eu-06-biondi-up.pdf
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: cgroups@vger.kernel.org
Acked-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-12-29 17:27:12 +00:00
|
|
|
Socket/process control group matching allows you to match locally
|
|
|
|
|
generated packets based on which net_cls control group processes
|
|
|
|
|
belong to.
|
|
|
|
|
|
2009-03-16 16:10:36 +00:00
|
|
|
config NETFILTER_XT_MATCH_CLUSTER
|
|
|
|
|
tristate '"cluster" match support'
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2009-03-16 16:10:36 +00:00
|
|
|
This option allows you to build work-load-sharing clusters of
|
|
|
|
|
network servers/stateful firewalls without having a dedicated
|
|
|
|
|
load-balancing router/server/switch. Basically, this match returns
|
|
|
|
|
true when the packet must be handled by this cluster node. Thus,
|
|
|
|
|
all nodes see all packets and this match decides which node handles
|
|
|
|
|
what packets. The work-load sharing algorithm is based on source
|
|
|
|
|
address hashing.
|
|
|
|
|
|
|
|
|
|
If you say Y or M here, try `iptables -m cluster --help` for
|
|
|
|
|
more information.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_COMMENT
|
|
|
|
|
tristate '"comment" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `comment' dummy-match, which allows you to put
|
|
|
|
|
comments in your iptables ruleset.
|
|
|
|
|
|
|
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_CONNBYTES
|
|
|
|
|
tristate '"connbytes" per-connection counter match support'
|
2007-03-14 23:37:25 +00:00
|
|
|
depends on NF_CONNTRACK
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `connbytes' match, which allows you to match the
|
|
|
|
|
number of bytes and/or packets for each direction within a connection.
|
|
|
|
|
|
|
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
2013-01-11 06:30:44 +00:00
|
|
|
config NETFILTER_XT_MATCH_CONNLABEL
|
|
|
|
|
tristate '"connlabel" match support'
|
|
|
|
|
select NF_CONNTRACK_LABELS
|
2013-02-03 01:24:07 +00:00
|
|
|
depends on NF_CONNTRACK
|
2013-01-11 06:30:44 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2013-01-11 06:30:44 +00:00
|
|
|
This match allows you to test and assign userspace-defined labels names
|
|
|
|
|
to a connection. The kernel only stores bit values - mapping
|
|
|
|
|
names to bits is done by userspace.
|
|
|
|
|
|
|
|
|
|
Unlike connmark, more than 32 flag bits may be assigned to a
|
|
|
|
|
connection simultaneously.
|
|
|
|
|
|
2007-07-15 03:47:26 +00:00
|
|
|
config NETFILTER_XT_MATCH_CONNLIMIT
|
2013-11-07 05:48:22 +00:00
|
|
|
tristate '"connlimit" match support'
|
2007-07-18 09:38:32 +00:00
|
|
|
depends on NF_CONNTRACK
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2017-12-09 20:01:08 +00:00
|
|
|
select NETFILTER_CONNCOUNT
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2007-07-15 03:47:26 +00:00
|
|
|
This match allows you to match against the number of parallel
|
|
|
|
|
connections to a server per client IP address (or address block).
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_CONNMARK
|
|
|
|
|
tristate '"connmark" connection mark match support'
|
2007-03-14 23:37:25 +00:00
|
|
|
depends on NF_CONNTRACK
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2010-02-26 13:20:32 +00:00
|
|
|
select NETFILTER_XT_CONNMARK
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2010-02-26 13:20:32 +00:00
|
|
|
This is a backwards-compat option for the user's convenience
|
|
|
|
|
(e.g. when running oldconfig). It selects
|
|
|
|
|
CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_CONNTRACK
|
|
|
|
|
tristate '"conntrack" connection tracking match support'
|
2007-03-14 23:37:25 +00:00
|
|
|
depends on NF_CONNTRACK
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
This is a general conntrack match module, a superset of the state match.
|
|
|
|
|
|
|
|
|
|
It allows matching on additional conntrack information, which is
|
|
|
|
|
useful in complex configurations, such as NAT gateways with multiple
|
|
|
|
|
internet links or tunnels.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
2010-07-23 10:59:36 +00:00
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_CPU
|
|
|
|
|
tristate '"cpu" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
CPU matching allows you to match packets based on the CPU
|
|
|
|
|
currently handling the packet.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_DCCP
|
2007-12-05 07:31:59 +00:00
|
|
|
tristate '"dccp" protocol match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2008-05-08 08:16:04 +00:00
|
|
|
default IP_DCCP
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
With this option enabled, you will be able to use the iptables
|
|
|
|
|
`dccp' match in order to match on DCCP source/destination ports
|
|
|
|
|
and DCCP flags.
|
|
|
|
|
|
|
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
2011-02-02 23:05:43 +00:00
|
|
|
config NETFILTER_XT_MATCH_DEVGROUP
|
|
|
|
|
tristate '"devgroup" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This options adds a `devgroup' match, which allows to match on the
|
|
|
|
|
device group a network device is assigned to.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-08-22 07:29:37 +00:00
|
|
|
config NETFILTER_XT_MATCH_DSCP
|
2007-12-05 07:37:54 +00:00
|
|
|
tristate '"dscp" and "tos" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-08-22 07:29:37 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `DSCP' match, which allows you to match against
|
|
|
|
|
the IPv4/IPv6 header DSCP field (differentiated services codepoint).
|
|
|
|
|
|
|
|
|
|
The DSCP field can have any value between 0x0 and 0x3f inclusive.
|
|
|
|
|
|
2007-12-05 07:37:54 +00:00
|
|
|
It will also add a "tos" match, which allows you to match packets
|
|
|
|
|
based on the Type Of Service fields of the IPv4 packet (which share
|
|
|
|
|
the same bits as DSCP).
|
|
|
|
|
|
2006-08-22 07:29:37 +00:00
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2011-06-09 19:03:07 +00:00
|
|
|
config NETFILTER_XT_MATCH_ECN
|
|
|
|
|
tristate '"ecn" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2011-06-09 19:03:07 +00:00
|
|
|
This option adds an "ECN" match, which allows you to match against
|
|
|
|
|
the IPv4 and TCP header ECN fields.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-04-01 10:22:30 +00:00
|
|
|
config NETFILTER_XT_MATCH_ESP
|
2007-12-05 07:31:59 +00:00
|
|
|
tristate '"esp" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-04-01 10:22:30 +00:00
|
|
|
help
|
|
|
|
|
This match extension allows you to match a range of SPIs
|
|
|
|
|
inside ESP header of IPSec packets.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2008-10-08 09:35:17 +00:00
|
|
|
config NETFILTER_XT_MATCH_HASHLIMIT
|
|
|
|
|
tristate '"hashlimit" match support'
|
2015-06-12 11:58:52 +00:00
|
|
|
depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
|
2008-10-08 09:35:17 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This option adds a `hashlimit' match.
|
|
|
|
|
|
|
|
|
|
As opposed to `limit', this match dynamically creates a hash table
|
|
|
|
|
of limit buckets, based on your selection of source/destination
|
|
|
|
|
addresses and/or ports.
|
|
|
|
|
|
|
|
|
|
It enables you to express policies like `10kpps for any given
|
|
|
|
|
destination address' or `500pps from any given source address'
|
|
|
|
|
with a single rule.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_HELPER
|
|
|
|
|
tristate '"helper" match support'
|
2007-03-14 23:37:25 +00:00
|
|
|
depends on NF_CONNTRACK
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
Helper matching allows you to match packets in dynamic connections
|
2019-07-08 22:57:09 +00:00
|
|
|
tracked by a conntrack-helper, ie. nf_conntrack_ftp
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say Y.
|
|
|
|
|
|
2009-02-18 17:39:31 +00:00
|
|
|
config NETFILTER_XT_MATCH_HL
|
|
|
|
|
tristate '"hl" hoplimit/TTL match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2009-02-18 17:39:31 +00:00
|
|
|
HL matching allows you to match packets based on the hoplimit
|
|
|
|
|
in the IPv6 header, or the time-to-live field in the IPv4
|
|
|
|
|
header of the packet.
|
|
|
|
|
|
2013-12-18 03:27:02 +00:00
|
|
|
config NETFILTER_XT_MATCH_IPCOMP
|
|
|
|
|
tristate '"ipcomp" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
This match extension allows you to match a range of CPIs(16 bits)
|
|
|
|
|
inside IPComp header of IPSec packets.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2008-01-15 07:42:47 +00:00
|
|
|
config NETFILTER_XT_MATCH_IPRANGE
|
|
|
|
|
tristate '"iprange" address range match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2008-01-15 07:42:47 +00:00
|
|
|
This option adds a "iprange" match, which allows you to match based on
|
|
|
|
|
an IP address range. (Normal iptables only matches on single addresses
|
|
|
|
|
with an optional mask.)
|
|
|
|
|
|
|
|
|
|
If unsure, say M.
|
|
|
|
|
|
2010-07-23 10:42:58 +00:00
|
|
|
config NETFILTER_XT_MATCH_IPVS
|
|
|
|
|
tristate '"ipvs" match support'
|
|
|
|
|
depends on IP_VS
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
depends on NF_CONNTRACK
|
|
|
|
|
help
|
|
|
|
|
This option allows you to match against IPVS properties of a packet.
|
|
|
|
|
|
|
|
|
|
If unsure, say N.
|
|
|
|
|
|
2014-01-06 10:17:08 +00:00
|
|
|
config NETFILTER_XT_MATCH_L2TP
|
|
|
|
|
tristate '"l2tp" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
default L2TP
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2014-01-06 10:17:08 +00:00
|
|
|
This option adds an "L2TP" match, which allows you to match against
|
|
|
|
|
L2TP protocol header fields.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_LENGTH
|
|
|
|
|
tristate '"length" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
This option allows you to match the length of a packet against a
|
|
|
|
|
specific value or range of values.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_LIMIT
|
|
|
|
|
tristate '"limit" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
limit matching allows you to control the rate at which a rule can be
|
|
|
|
|
matched: mainly useful in combination with the LOG target ("LOG
|
|
|
|
|
target support", below) and to avoid some Denial of Service attacks.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_MAC
|
|
|
|
|
tristate '"mac" address match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
MAC matching allows you to match packets based on the source
|
|
|
|
|
Ethernet address of the packet.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_MARK
|
|
|
|
|
tristate '"mark" match support'
|
2009-02-28 02:23:57 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_XT_MARK
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2009-02-28 02:23:57 +00:00
|
|
|
This is a backwards-compat option for the user's convenience
|
|
|
|
|
(e.g. when running oldconfig). It selects
|
|
|
|
|
CONFIG_NETFILTER_XT_MARK (combined mark/MARK module).
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
2008-10-08 09:35:17 +00:00
|
|
|
config NETFILTER_XT_MATCH_MULTIPORT
|
|
|
|
|
tristate '"multiport" Multiple port match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
help
|
|
|
|
|
Multiport matching allows you to match TCP or UDP packets based on
|
|
|
|
|
a series of source or destination ports: normally a rule can only
|
|
|
|
|
match a single range of ports.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2011-12-23 13:28:59 +00:00
|
|
|
config NETFILTER_XT_MATCH_NFACCT
|
|
|
|
|
tristate '"nfacct" match support'
|
2011-12-28 15:03:30 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2011-12-23 13:28:59 +00:00
|
|
|
select NETFILTER_NETLINK_ACCT
|
|
|
|
|
help
|
|
|
|
|
This option allows you to use the extended accounting through
|
|
|
|
|
nfnetlink_acct.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2010-03-16 19:06:55 +00:00
|
|
|
config NETFILTER_XT_MATCH_OSF
|
|
|
|
|
tristate '"osf" Passive OS fingerprint match'
|
2018-07-24 23:32:44 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
|
|
|
|
select NETFILTER_NETLINK_OSF
|
2010-03-16 19:06:55 +00:00
|
|
|
help
|
|
|
|
|
This option selects the Passive OS Fingerprinting match module
|
|
|
|
|
that allows to passively match the remote operating system by
|
|
|
|
|
analyzing incoming TCP SYN packets.
|
|
|
|
|
|
|
|
|
|
Rules and loading software can be downloaded from
|
|
|
|
|
http://www.ioremap.net/projects/osf
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2007-12-05 07:27:38 +00:00
|
|
|
config NETFILTER_XT_MATCH_OWNER
|
|
|
|
|
tristate '"owner" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2007-12-05 07:27:38 +00:00
|
|
|
Socket owner matching allows you to match locally-generated packets
|
|
|
|
|
based on who created the socket: the user or group. It is also
|
|
|
|
|
possible to check whether a socket actually exists.
|
|
|
|
|
|
2006-03-21 02:03:40 +00:00
|
|
|
config NETFILTER_XT_MATCH_POLICY
|
|
|
|
|
tristate 'IPsec "policy" match support'
|
2008-10-08 09:35:18 +00:00
|
|
|
depends on XFRM
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
2006-03-21 02:03:40 +00:00
|
|
|
help
|
|
|
|
|
Policy matching allows you to match packets based on the
|
|
|
|
|
IPsec policy that was used during decapsulation/will
|
|
|
|
|
be used during encapsulation.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_PHYSDEV
|
|
|
|
|
tristate '"physdev" match support'
|
2008-10-08 09:35:18 +00:00
|
|
|
depends on BRIDGE && BRIDGE_NETFILTER
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
Physdev packet matching matches against the physical bridge ports
|
|
|
|
|
the IP packet arrived on or will leave by.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
|
|
|
|
config NETFILTER_XT_MATCH_PKTTYPE
|
|
|
|
|
tristate '"pkttype" packet type match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
Packet type matching allows you to match a packet by
|
|
|
|
|
its "class", eg. BROADCAST, MULTICAST, ...
|
|
|
|
|
|
|
|
|
|
Typical usage:
|
|
|
|
|
iptables -A INPUT -m pkttype --pkt-type broadcast -j LOG
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
2006-05-30 01:20:32 +00:00
|
|
|
config NETFILTER_XT_MATCH_QUOTA
|
|
|
|
|
tristate '"quota" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2006-05-30 01:20:32 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `quota' match, which allows to match on a
|
|
|
|
|
byte counter.
|
|
|
|
|
|
|
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
2006-05-30 01:20:32 +00:00
|
|
|
|
2007-12-04 12:02:19 +00:00
|
|
|
config NETFILTER_XT_MATCH_RATEEST
|
|
|
|
|
tristate '"rateest" match support'
|
2008-01-15 07:30:56 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2007-12-04 12:02:19 +00:00
|
|
|
select NETFILTER_XT_TARGET_RATEEST
|
|
|
|
|
help
|
|
|
|
|
This option adds a `rateest' match, which allows to match on the
|
|
|
|
|
rate estimated by the RATEEST target.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_REALM
|
|
|
|
|
tristate '"realm" match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2011-01-14 12:36:42 +00:00
|
|
|
select IP_ROUTE_CLASSID
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `realm' match, which allows you to use the realm
|
|
|
|
|
key from the routing subsystem inside iptables.
|
2007-12-18 06:47:05 +00:00
|
|
|
|
2019-09-13 08:13:02 +00:00
|
|
|
This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
in tc world.
|
2007-12-18 06:47:05 +00:00
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
2008-10-08 09:35:00 +00:00
|
|
|
config NETFILTER_XT_MATCH_RECENT
|
|
|
|
|
tristate '"recent" match support'
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2008-10-08 09:35:00 +00:00
|
|
|
This match is used for creating one or many lists of recently
|
|
|
|
|
used addresses and then matching against that/those list(s).
|
|
|
|
|
|
|
|
|
|
Short options are available by using 'iptables -m recent -h'
|
|
|
|
|
Official Website: <http://snowman.net/projects/ipt_recent/>
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_SCTP
|
2012-10-02 18:19:54 +00:00
|
|
|
tristate '"sctp" protocol match support'
|
2007-12-18 06:47:05 +00:00
|
|
|
depends on NETFILTER_ADVANCED
|
2008-05-08 08:16:04 +00:00
|
|
|
default IP_SCTP
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
help
|
2019-09-13 08:13:02 +00:00
|
|
|
With this option enabled, you will be able to use the
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
`sctp' match in order to match on SCTP source/destination ports
|
|
|
|
|
and SCTP chunk types.
|
|
|
|
|
|
|
|
|
|
If you want to compile it as a module, say M here and read
|
2019-06-12 17:52:48 +00:00
|
|
|
<file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
|
2008-10-08 09:35:12 +00:00
|
|
|
config NETFILTER_XT_MATCH_SOCKET
|
2012-10-02 18:19:54 +00:00
|
|
|
tristate '"socket" match support'
|
2008-10-08 09:35:12 +00:00
|
|
|
depends on NETFILTER_XTABLES
|
|
|
|
|
depends on NETFILTER_ADVANCED
|
2015-06-12 11:58:52 +00:00
|
|
|
depends on IPV6 || IPV6=n
|
|
|
|
|
depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
|
2018-06-28 18:01:02 +00:00
|
|
|
select NF_SOCKET_IPV4
|
|
|
|
|
select NF_SOCKET_IPV6 if IP6_NF_IPTABLES
|
2008-10-08 09:35:12 +00:00
|
|
|
select NF_DEFRAG_IPV4
|
2015-11-10 12:22:15 +00:00
|
|
|
select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES != n
|
2008-10-08 09:35:12 +00:00
|
|
|
help
|
|
|
|
|
This option adds a `socket' match, which can be used to match
|
|
|
|
|
packets for which a TCP or UDP socket lookup finds a valid socket.
|
|
|
|
|
It can be used in combination with the MARK target and policy
|
|
|
|
|
routing to implement full featured non-locally bound sockets.
|
|
|
|
|
|
|
|
|
|
To compile it as a module, choose M here. If unsure, say N.
|
|
|
|
|
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
|
|
|
config NETFILTER_XT_MATCH_STATE
|
|
|
|
|
tristate '"state" match support'
|
2007-03-14 23:37:25 +00:00
|
|
|
depends on NF_CONNTRACK
|
2007-12-18 06:47:05 +00:00
|
|
|
default m if NETFILTER_ADVANCED=n
|
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
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help
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Connection state matching allows you to match packets based on their
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relationship to a tracked connection (ie. previous packets). This
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is a powerful tool for packet classification.
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To compile it as a module, choose M here. If unsure, say N.
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2006-05-30 01:21:00 +00:00
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config NETFILTER_XT_MATCH_STATISTIC
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tristate '"statistic" match support'
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2007-12-18 06:47:05 +00:00
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depends on NETFILTER_ADVANCED
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2006-05-30 01:21:00 +00:00
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help
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2006-06-27 10:02:14 +00:00
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This option adds a `statistic' match, which allows you to match
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on packets periodically or randomly with a given percentage.
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To compile it as a module, choose M here. If unsure, say N.
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2006-05-30 01:21:00 +00:00
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[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
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config NETFILTER_XT_MATCH_STRING
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tristate '"string" match support'
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2007-12-18 06:47:05 +00:00
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depends on NETFILTER_ADVANCED
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[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
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select TEXTSEARCH
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select TEXTSEARCH_KMP
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select TEXTSEARCH_BM
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select TEXTSEARCH_FSM
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help
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This option adds a `string' match, which allows you to look for
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pattern matchings in packets.
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To compile it as a module, choose M here. If unsure, say N.
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config NETFILTER_XT_MATCH_TCPMSS
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tristate '"tcpmss" match support'
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2007-12-18 06:47:05 +00:00
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depends on NETFILTER_ADVANCED
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[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
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help
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This option adds a `tcpmss' match, which allows you to examine the
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MSS value of TCP SYN packets, which control the maximum packet size
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for that connection.
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To compile it as a module, choose M here. If unsure, say N.
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2007-09-28 21:46:43 +00:00
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config NETFILTER_XT_MATCH_TIME
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tristate '"time" match support'
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2007-12-18 06:47:05 +00:00
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depends on NETFILTER_ADVANCED
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2020-06-13 16:50:22 +00:00
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help
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2007-09-28 21:46:43 +00:00
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This option adds a "time" match, which allows you to match based on
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the packet arrival time (at the machine which netfilter is running)
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on) or departure time/date (for locally generated packets).
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If you say Y here, try `iptables -m time --help` for
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more information.
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If you want to compile it as a module, say M here.
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If unsure, say N.
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2007-07-08 05:20:36 +00:00
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config NETFILTER_XT_MATCH_U32
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tristate '"u32" match support'
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2007-12-18 06:47:05 +00:00
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depends on NETFILTER_ADVANCED
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2020-06-13 16:50:22 +00:00
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help
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2007-07-08 05:20:36 +00:00
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u32 allows you to extract quantities of up to 4 bytes from a packet,
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AND them with specified masks, shift them by specified amounts and
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test whether the results are in any of a set of specified ranges.
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The specification of what to extract is general enough to skip over
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headers with lengths stored in the packet, as in IP or TCP header
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lengths.
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Details and examples are in the kernel module source.
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2008-10-08 09:35:18 +00:00
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endif # NETFILTER_XTABLES
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2006-02-13 23:42:48 +00:00
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2008-10-08 09:35:18 +00:00
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endmenu
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2006-02-13 23:42:48 +00:00
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netfilter: ipset: IP set core support
The patch adds the IP set core support to the kernel.
The IP set core implements a netlink (nfnetlink) based protocol by which
one can create, destroy, flush, rename, swap, list, save, restore sets,
and add, delete, test elements from userspace. For simplicity (and backward
compatibilty and for not to force ip(6)tables to be linked with a netlink
library) reasons a small getsockopt-based protocol is also kept in order
to communicate with the ip(6)tables match and target.
The netlink protocol passes all u16, etc values in network order with
NLA_F_NET_BYTEORDER flag. The protocol enforces the proper use of the
NLA_F_NESTED and NLA_F_NET_BYTEORDER flags.
For other kernel subsystems (netfilter match and target) the API contains
the functions to add, delete and test elements in sets and the required calls
to get/put refereces to the sets before those operations can be performed.
The set types (which are implemented in independent modules) are stored
in a simple RCU protected list. A set type may have variants: for example
without timeout or with timeout support, for IPv4 or for IPv6. The sets
(i.e. the pointers to the sets) are stored in an array. The sets are
identified by their index in the array, which makes possible easy and
fast swapping of sets. The array is protected indirectly by the nfnl
mutex from nfnetlink. The content of the sets are protected by the rwlock
of the set.
There are functional differences between the add/del/test functions
for the kernel and userspace:
- kernel add/del/test: works on the current packet (i.e. one element)
- kernel test: may trigger an "add" operation in order to fill
out unspecified parts of the element from the packet (like MAC address)
- userspace add/del: works on the netlink message and thus possibly
on multiple elements from the IPSET_ATTR_ADT container attribute.
- userspace add: may trigger resizing of a set
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-02-01 14:28:35 +00:00
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source "net/netfilter/ipset/Kconfig"
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2008-09-19 10:32:57 +00:00
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source "net/netfilter/ipvs/Kconfig"
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