Date: Tue, 23 Dec 2003 12:28:09 -0800 From: Luigi Rizzo <rizzo@icir.org> To: freebsd-hackers@freebsd.org Subject: Re: natd + ipfw question Message-ID: <20031223122808.A7604@xorpc.icir.org> In-Reply-To: <20031223201712.GA33497@ussenterprise.ufp.org>; from bicknell@ufp.org on Tue, Dec 23, 2003 at 03:17:12PM -0500 References: <20031223165439.GA23721@ussenterprise.ufp.org> <20031223201712.GA33497@ussenterprise.ufp.org>
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On Tue, Dec 23, 2003 at 03:17:12PM -0500, Leo Bicknell wrote: ... > I must not be clear on what "in" "out" "recv" and "xmit" mean, and > after reading the manual page 3 times I'm now even more confused. The names are reasonably intuitive... "in" matches packets on the INput path (basically, ip_input() and/or ether_input() "out" matches packets on the OUTput path; (ip_output() and/or ether_output()) "recv foo0" matches packets that have been received from interface "foo0" "xmit bar1" matches packets that are going to be transmitted on interface "bar1" "via xx2" matches packets that are either received or transmitted through interface xx2 the flow diagram near the beginning of the ipfw manpage should clarify things a bit (i agree that the wording of 'recv/xmit/via' section is a bit confusing, so if you have better suggestions they are welcome) cheers luigi
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