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Date:      Thu, 21 Nov 2002 13:53:13 -0500
From:      Scot Loach <sloach@SANDVINE.com>
To:        "'freebsd-net@freebsd.org'" <freebsd-net@freebsd.org>
Subject:   Using ipfw to forward udp
Message-ID:  <FE045D4D9F7AED4CBFF1B3B813C85337E5F45A@mail.sandvine.com>

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I'm trying to implement a type of transparent proxy for UDP.  My idea was to
use ipfw to redirect all incoming UDP packets to my server, for example:

ipfw add fwd 127.0.0.1,9000 udp from any to any recv em0

However this doesn't seem to work: my server only receives UDP packets that
are addressed to port 9000.

Can anyone suggest what I might be doing wrong?

thanks

scot.

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