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Date:      Thu, 01 Aug 2002 11:33:52 -0400
From:      "Matt Abraham" <mailing@novaconnect.net>
To:        freebsd-ipfw@freebsd.org
Subject:   "ipfw fwd" not working without static route?
Message-ID:  <web-44848@novaconnect.net>

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I'm trying to forward all packets from a privately addressed
machine (172.17.1.5) to a gateway via a FreeBSD box running
ipfw. Here's the ipfw directive:

fwd 192.168.215.15 log logamount 10000 ip from 172.17.1.5 to
any

Now when I ping public address a.b.c.d from 172.17.1.5, I
get a "Destination Host Unreachable." When I try to ping
this same address from the FreeBSD box, I get a "No route to
host" message. Adding a static route, however, solves the
problem:

route add -net a.b.c.d 192.169.215.15

...so now I can ping from both 172.17.1.5 and my FreeBSD
firewall! Of course, having to add routes, sort of defeats
the ipfw fwd command, doesn't it?

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