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Date:      Thu, 22 Mar 2001 12:06:50 -0800 (PST)
From:      Gordon Tetlow <gordont@bluemtn.net>
To:        Andre Goeree <abgoeree@uwnet.nl>
Cc:        <stable@FreeBSD.ORG>
Subject:   Re: ipfw stateful filtering
Message-ID:  <Pine.BSF.4.33.0103221205460.87344-100000@sdmail0.sd.bmarts.com>
In-Reply-To: <20010322164215.A20386@mandark.attica.home>

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I have the same thing.... If you read the ipfw man page, it actually tells
you that you don't need a check-state rule as the first keep-state rule
implies check-state. I imagine the counters go elsewhere but I'm not sure.
If I get the time, I'll look at the code.

-gordon

On Thu, 22 Mar 2001, Andre Goeree wrote:

> I'm experimenting a little with stateful filtering.
> Somehow it doesn't work like i expect; output of "ipfw show":
>
> 00100    0      0 check-state
> 00200 2874 690508 allow ip from any to any via lo0
> [snip address checking rules]
> 02100    0      0 deny tcp from any to any via tun* established
> 02200  890 308516 allow tcp from any 4000-5000 to any keep-state out xmit tun* setup
> [snip local network rules]
> ## Dynamic rules:
> 02200 889 308472 (T 0, # 176) ty 0 tcp, XXX.XXX.XXX.XXX 4025 <-> XXX.XXX.XXX.XXX 110
>
> It appears that the check-state rule never matches..
> Am i overlooking something?
>
> --Andre.
>
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