From: Patrick McHardy <kaber@trash.net>
To: "David S. Miller" <davem@davemloft.net>
Cc: Netfilter Development Mailinglist <netfilter-devel@lists.netfilter.org>
Subject: [NETFILTER]: Ignore PSH on SYN/ACK in TCP connection tracking
Date: Sun, 24 Apr 2005 23:41:15 +0200 [thread overview]
Message-ID: <426C127B.9030108@trash.net> (raw)
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This patch fixes a problem with TCP connection tracking and
some devices that respond with SYN/ACK/PSH to a SYN packet.
TCP connection tracking considers these packets to be invalid
and the connection never reaches an estabished state. Ignore
PSH on SYN/ACKs.
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[NETFILTER]: Ignore PSH on SYN/ACK in TCP connection tracking
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
commit 72fbbd2b143c27c9c3793698c04302d066d9e4bc
tree 790636ed7460d6ca2b20cfd98df33a381fe2f0db
parent df6c6804ce1d383c878ab071bce8125125d96abc
author NIIBE Yutaka <gniibe@fsij.org> 1114303196 +0200
committer Patrick McHardy <kaber@trash.net> 1114303196 +0200
Index: net/ipv4/netfilter/ip_conntrack_proto_tcp.c
===================================================================
--- 43765d4b40a4a3c64f2a32b684f4041e2f01644d/net/ipv4/netfilter/ip_conntrack_proto_tcp.c (mode:100644 sha1:e800b16fc9209dd5a26e65d2be4eb83d77a7d7af)
+++ 790636ed7460d6ca2b20cfd98df33a381fe2f0db/net/ipv4/netfilter/ip_conntrack_proto_tcp.c (mode:100644 sha1:2b87c1974be605d5bdb1ee769188d7e03fb2ddc8)
@@ -770,6 +770,7 @@
{
[TH_SYN] = 1,
[TH_SYN|TH_ACK] = 1,
+ [TH_SYN|TH_ACK|TH_PUSH] = 1,
[TH_RST] = 1,
[TH_RST|TH_ACK] = 1,
[TH_RST|TH_ACK|TH_PUSH] = 1,
next reply other threads:[~2005-04-24 21:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-24 21:41 Patrick McHardy [this message]
2005-04-25 1:43 ` [NETFILTER]: Ignore PSH on SYN/ACK in TCP connection tracking David S. Miller
2005-04-26 15:15 ` Joubert Berger
2005-04-26 15:22 ` Patrick McHardy
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