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Date:      Mon, 15 Jul 2002 10:46:07 -0400
From:      Zak Johnson <zakj@nox.cx>
To:        security@FreeBSD.ORG
Subject:   Re: ipfw and keep-state
Message-ID:  <20020715144607.GA45492@opiate.nox.cx>
In-Reply-To: <3D32D849.E3D8F2BE@rt.ru>
References:  <3D32D849.E3D8F2BE@rt.ru>

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On Mon, Jul 15, 2002 at 06:12:25PM +0400, Dmitry S. Rzhavin wrote:
> Or, in other words, I want to pre-auth some packet with rile 10 to
> check it later. Then, I decide to drop it. 
> But ipfw creates dynamic rule "inet <-> ip1" and passes this
> session. I think this is not good. Why does ipfw works this way?

It sounds as though you're used to IPFilter, in which the last-matched
rule wins.  ipfw stops processing rules after the first match.  See
http://coombs.anu.edu.au/~avalon/ipfilfaq.html#III-2 .

-Zak

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