From: Evrim ULU <evrim@core.gen.tr>
To: netfilter-devel@lists.netfilter.org
Subject: Re: can tcp stream reassembly be done in netfilter
Date: Tue, 26 Aug 2003 23:38:44 +0300 [thread overview]
Message-ID: <3F4BC554.9080902@core.gen.tr> (raw)
In-Reply-To: <Pine.LNX.4.53.0308271030240.2748@oskar-lap.agatha>
Oskar Andreasson wrote:
>On Tue, 26 Aug 2003, zhengchuanbo wrote:
>
>
>> Can netfilter do the tcp stream reassembly? I mean something like
>>what snort do in the stream process. I wish this could be done in the
>>kernel.
>>
>>
>
>No, netfilter is a packet filter. It works on a per packet basis, below
>
>streams. That's when you should use snort or proxy solutions of one sort
>or another.
>
>
>
Hi,
I am considering to try this one. Snort is a crap on behalf of my
examinations about tcpreassambly code. (see state evasion bug) Linux
kernel includes tcp reassembly thing and one can use it to glue data for
signature check. The only reason for this is, *why don't we have a
kernel based signature ids?*. Anybody interested in discussion may mail
me, don't want to abuse ppl here.
Evrim.
next prev parent reply other threads:[~2003-08-26 20:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-26 2:21 can tcp stream reassembly be done in netfilter zhengchuanbo
2003-08-27 8:35 ` Oskar Andreasson
2003-08-26 20:38 ` Evrim ULU [this message]
2003-08-27 2:16 ` New netfilter module Christian Hentschel
2003-08-30 19:06 ` can tcp stream reassembly be done in netfilter Harald Welte
2003-08-31 20:14 ` Oskar Andreasson
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