From: Amin Azez <azez@ufomechanic.net>
To: linux-kernel@vger.kernel.org
Cc: netfilter-devel@lists.netfilter.org
Subject: Re: [PATCH] chaostables
Date: Fri, 09 Mar 2007 09:35:37 +0000 [thread overview]
Message-ID: <45F12A69.1060406@ufomechanic.net> (raw)
In-Reply-To: <Pine.LNX.4.61.0703082112300.521@yvahk01.tjqt.qr>
* Jan Engelhardt wrote, On 08/03/07 20:26:
> xt_portscan needs to keep track of what packets the machine has already
> seen. So on the first SYN, the connection is marked with "1". (Then we
> send our SYN-ACK... and the connection turns ESTABLISHED.) The next
> packet that is received will be an ACK or an RST. But it must come
> _exactly after_ the SYN, so just using --tcp-flags ACK will not work. A
> state which can be remembered is required. For that, an automaton is
> used, whose state is saved in the connection mark.
There would me more point in having this as a new match if it didn't
trample on the connection mark, but used it's own slot or flag-bit.
Sam
next prev parent reply other threads:[~2007-03-09 9:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-08 6:35 Jan Engelhardt
2007-03-08 12:59 ` Patrick McHardy
2007-03-08 13:14 ` Alan Cox
2007-03-08 14:55 ` James Morris
2007-03-08 16:39 ` Jan Engelhardt
2007-03-08 17:15 ` Patrick McHardy
2007-03-08 20:26 ` Jan Engelhardt
2007-03-09 9:35 ` Amin Azez [this message]
2007-03-09 10:19 ` Jan Engelhardt
2007-03-09 11:54 ` Amin Azez
2007-03-09 17:30 ` Jan Engelhardt
2007-03-09 7:54 ` Jan Engelhardt
2007-03-08 18:14 ` Alan Cox
2007-03-09 8:07 ` jimmy
2007-03-09 16:23 ` Petr Tesařík
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