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Date: Sun, 7 Dec 2008 02:04:41 +1100 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: Olivier Nicole <on@cs.ait.ac.th>
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Cc: freebsd-questions@freebsd.org
Subject: Re: ipfw and bridged interface
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On Thu, 4 Dec 2008 10:33:23 +0700 (ICT)
 Olivier Nicole <on@cs.ait.ac.th> wrote:

 > I remember that I read, many years ago, something about the way ipfw
 > interacts with the IP stack. AFAIR, ipfw would be called on layer 2,
 > where only certain rules would be applied, then on the IP layer where
 > other rules would apply. Is it still the case? Where can I find th
 > description?

Hi Olivier,

See the ipfw(8) section PACKET FLOW .. it's all there, with examples of 
how to separate layer2 from layer3 traffic, inbound and outbound.

cheers, Ian