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Date:      Fri, 25 Feb 2000 18:56:46 +0100 (CET)
From:      Luigi Rizzo <luigi@info.iet.unipi.it>
To:        jsegovia@cnc.una.py
Cc:        freebsd-ipfw@FreeBSD.ORG
Subject:   Re: keep-state and fwd
Message-ID:  <200002251756.SAA13170@info.iet.unipi.it>
In-Reply-To: <200002251834.OAA26064@alpha.cnc.una.py> from "jsegovia@cnc.una.py" at "Feb 25, 2000 02:35:29 pm"

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> I'd like to know if anyone is using ipfw with keep-state
> and fwd (forwarding). I'm having trouble getting it
> to work.

will look at it. can you compile a kernel with "options DDB" and
show a trace when it fails ?

	cheers
	luigi

> For example, if I have the following:
> 
>  ipfw add 10 check-state
>  ipfw add 20 deny tcp from any to any established
>  ipfw add 30 fwd 127.0.0.1,2525 tcp from _my_net_ to any 25 setup \   
>     keep-state
>  ipfw add 40 allow tcp from _my_net_ to any setup keep-state
>  ipfw add 50 deny tcp from any to any
> 
> And then
>    $ telnet 127.0.0.1 25
> 
> I get an instant panic (double fault)
> 
> If I telnet to another machine
>    $ telnet some_other_machine 25
> 
> the connection is never established but an error is also
> never returned.
> 
> If keep-state is not used (that is, fwd without keep-state)
> everything works fine but unfortunately I need ipfw to be
> stateful.
> 
> I'm using -current and cvsup'd yesterday.
> 
> Any help greatly appreciated.
> 
> Juan
> --
> Centro Nacional de Computacion
> Universidad Nacional de Asuncion
> Tel. +595 (21) 585 550
> 
> 
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