diff mbox series

[net,06/14] docs: tproxy: ignore non-transparent sockets in iptables

Message ID 20240926110717.102194-7-pablo@netfilter.org (mailing list archive)
State Accepted
Commit aa758763be6ddcc1c500c6e4e8a15d604e8eadba
Delegated to: Netdev Maintainers
Headers show
Series [net,01/14] netfilter: nf_nat: don't try nat source port reallocation for reverse dir clash | expand

Checks

Context Check Description
netdev/series_format success Pull request is its own cover letter
netdev/tree_selection success Clearly marked for net
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 7 this patch: 7
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 2 maintainers not CCed: corbet@lwn.net linux-doc@vger.kernel.org
netdev/build_clang success Errors and warnings before: 7 this patch: 7
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 7 this patch: 7
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Pablo Neira Ayuso Sept. 26, 2024, 11:07 a.m. UTC 
From: 谢致邦 (XIE Zhibang) <Yeking@Red54.com>

The iptables example was added in commit d2f26037a38a (netfilter: Add
documentation for tproxy, 2008-10-08), but xt_socket 'transparent'
option was added in commit a31e1ffd2231 (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>
---
 Documentation/networking/tproxy.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/Documentation/networking/tproxy.rst b/Documentation/networking/tproxy.rst
index 00dc3a1a66b4..7f7c1ff6f159 100644
--- a/Documentation/networking/tproxy.rst
+++ b/Documentation/networking/tproxy.rst
@@ -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