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Date:      Sat, 6 Apr 2002 10:09:01 +0200
From:      Barry Irwin <bvi@itouchlabs.com>
To:        freebsd-net@freebsd.org
Subject:   Packets lost when forwarding disabled
Message-ID:  <20020406100901.C62987@itouchlabs.com>

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Hi All

After mucking around on a firewall problem on the other side of the world
yesterday, the problem was that net.inet.ip.forwarding was set to off * the
gateway_enable had been mangled in rc.conf).  Packets were being received by
the firewall kernel, and happily passed through the firewall ruleset as
expected, they then dissapeared.

I thought it would be useful to have a sysctl knob which would allow one to
cause these packets to be logged.  From a security pov it would be
interesting to know if people are trying to use you as a gateway?

Now for the real question, does somethign like this already exist, and am I
going to be re-inventing the whell if I add it to the kernel. I s the
another way of doing this?

Thanks
Barry

--
Barry Irwin		bvi@itouchlabs.com			+27214875177
Systems Administrator: Networks And Security
Itouch Labs 		http://www.itouchlabs.com		South Africa


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