From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
To: netfilter@lists.netfilter.org
Subject: Re: Dropped fin acks (iptables + lvs)
Date: Sat, 27 Jan 2007 17:19:44 +0100 [thread overview]
Message-ID: <45BB7BA0.5030605@plouf.fr.eu.org> (raw)
In-Reply-To: <Pine.LNX.4.61.0701242315170.32656@yvahk01.tjqt.qr>
Hello,
Jan Engelhardt a écrit :
>>I am running iptables and lvs on two boxes loadbalancing http[s] and ssh traffic to two real servers.
>>Everything is working just fine from the users point of view. However,
>>I keep seeing a lot of dropped packets of type ack/fin and ack/rst in
>>my iptables log. Seems like the connection tracking isn't working the
>>way I expect it to.
>
> RST-ACK is received as a response to SYN to a closed port, and hence, is
> not part of a connection.
At Netfilter connection tracking level, ACK/RST in response to SYN is
part of a connection and is supposed to be in the ESTABLISHED state,
even though at TCP level the connection is not established.
next prev parent reply other threads:[~2007-01-27 16:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-24 16:05 Dropped fin acks (iptables + lvs) Patrik Karén
2007-01-24 22:17 ` Jan Engelhardt
2007-01-25 21:30 ` Patrik Karén
2007-01-27 16:19 ` Pascal Hambourg [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-03-14 13:57 Klaas Jan Wierenga
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