From owner-freebsd-current  Thu Aug 22 14:22:36 1996
Return-Path: owner-current
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id OAA18795
          for current-outgoing; Thu, 22 Aug 1996 14:22:36 -0700 (PDT)
Received: from red.jnx.com (ppp-206-170-2-68.sntc01.pacbell.net [206.170.2.68])
          by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id OAA18784;
          Thu, 22 Aug 1996 14:22:32 -0700 (PDT)
Received: from base.jnx.com (base.jnx.com [208.197.169.238]) by red.jnx.com (8.7.5/8.7.3) with ESMTP id OAA03962; Thu, 22 Aug 1996 14:22:27 -0700 (PDT)
Received: from base.jnx.com (localhost.jnx.com [127.0.0.1]) by base.jnx.com (8.7.5/8.7.3) with ESMTP id OAA05175; Thu, 22 Aug 1996 14:22:16 -0700 (PDT)
Message-Id: <199608222122.OAA05175@base.jnx.com>
To: Julian Elischer <julian@whistle.com>
cc: sos@freebsd.org, "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>,
        current@freebsd.org, archie@whistle.com
Subject: Re: cvs commit: src/sys/netinet in.h ip_fw.h ip_input.c ip_output.c 
In-reply-to: Your message of "Thu, 22 Aug 1996 14:15:14 PDT."
             <321CCDE2.794BDF32@whistle.com> 
Date: Thu, 22 Aug 1996 14:22:16 -0700
From: Paul Traina <pst@jnx.com>
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

Just on the subject of NAT in general, I would strongly suggest anyone
considering NAT look at the Linux code.  It's not pretty, but one interface
that is *critical* is the "nat exceptions" code.  They've done a really good
job on that bit of work.

By NAT exceptions, I mean that there is actual code that sniffs datastreams
and looks for things like FTP port numbers and irc DCC's and RealAudio stream
IDs, etc.

Paul