Re: [Problem] Linux 2.4.5-ac17 ipt_unclean 'fixes'

[Josh McKinney <forming@home.com>]

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Me too.

On approximately Sat, Jul 14, 2001 at 05:00:21PM -0500, J Troy Piper wrote:
> 
> > 2.4.5-ac17
> > o	First set of ipt_unclean fixes			(Rusty Russell)
> 
> Alan, 
> 
> I apologise for having taken so long to write this (I have known about 
> this problem since 2.4.5ac17 and have not had a chance to document til 
> today) but there seems to be a problem with the ipt_unclean fixes by Rusty 
> Russell.  ANY incoming packets from any interface (ppp0 and eth0) are 
> marked as 'unclean' with some variation on the following syslog entry:
> 
> Jul  8 23:16:04 paranoia kernel: ipt_unclean: TCP option 3 at 37 too long
> Jul  8 23:16:05 paranoia kernel: ipt_unclean: TCP option 3 at 37 too long
> Jul  8 23:16:16 paranoia kernel: ipt_unclean: TCP option 3 at 37 too long
> Jul  8 23:16:18 paranoia kernel: ipt_unclean: TCP option 3 at 37 too long
> 
> and thus are blocked by my 'unclean packet dropping' firewall (iptables).
> 
> I haven't seen any mention of this on the list, nor have I seen any more 
> ipt_unclean patches to address this problem, so here's your heads-up 
> (albeit a bit late).
> 
> Thanks,
> 
> J Troy Piper
> jtp@dok.org
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