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docs: tproxy: ignore non-transparent sockets in iptables

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The iptables example was added in commit d2f26037a3 (netfilter: Add
documentation for tproxy, 2008-10-08), but xt_socket 'transparent'
option was added in commit a31e1ffd22 (netfilter: xt_socket: added new
revision of the 'socket' match supporting flags, 2009-06-09).

Now add the 'transparent' option to the iptables example to ignore
non-transparent sockets, which is also consistent with the nft example.

Signed-off-by: 谢致邦 (XIE Zhibang) <Yeking@Red54.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
谢致邦 (XIE Zhibang) 2024-09-12 11:59:33 +00:00 committed by Pablo Neira Ayuso
parent 2cadd3b177
commit aa758763be
1 changed files with 1 additions and 1 deletions
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2
Documentation/networking/tproxy.rst
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@ -17,7 +17,7 @@ The idea is that you identify packets with destination address matching a local
socket on your box, set the packet mark to a certain value::
# iptables -t mangle -N DIVERT
# iptables -t mangle -A PREROUTING -p tcp -m socket -j DIVERT
# iptables -t mangle -A PREROUTING -p tcp -m socket --transparent -j DIVERT
# iptables -t mangle -A DIVERT -j MARK --set-mark 1
# iptables -t mangle -A DIVERT -j ACCEPT