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Date:      Fri, 8 Mar 2002 14:43:38 +0200 (EET)
From:      Markko Merzin <markko@leida.eau.ee>
To:        <stable@FreeBSD.ORG>
Cc:        <ipfilter@coombs.anu.edu.au>
Subject:   repeatable craches in freebsd with ipfilter
Message-ID:  <Pine.BSF.4.32.0203081423240.26781-100000@leida.eau.ee>

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Hi!

How-to repeat it:

Take freebsd-4.5 or 4.4 with ipfilter v3.4.20 and set up some ipfilter
rules. Basic example:

ipf.rules:
pass in quick on lo0
pass out quick proto tcp all flags S keep state keep frags
pass out quick proto udp all keep state

ipnat.rules:
map fxp0 0/0 -> 0/32 proxy port ftp ftp/tcp

Then try from the box: ftp pann.starnet.ee
Your machine freezes.

I dont know what is so special with this ftp site, i looked at tcpdump
logs and saw nothing abnormal.

Btw, it may be wise to check that you dont have any other ipfilter wall in
path to that ftp server.

-- 
Markko


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