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Date:      04 Jul 2003 10:41:31 -0400
From:      Lowell Gilbert <freebsd-questions-local@be-well.no-ip.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: ipfw troubles
Message-ID:  <44r856qrqc.fsf@be-well.ilk.org>
In-Reply-To: <Pine.LNX.4.33.0307021429340.22146-100000@odin.ac.hmc.edu>
References:  <Pine.LNX.4.33.0307021429340.22146-100000@odin.ac.hmc.edu>

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Dan Phiffer <dphiffer@hmc.edu> writes:

> I guess this means I'm not serving DHCP - what kind of rule would fix
> that?

There are two sides.  You need to accept the packets coming in to
dhcps, as well as the ones going out to dhcpc.  There are a number
of different ways to do this, but make sure you keep it limited to
the interface on which you intend to supply these addresses.

>       I read somewhere that simply using natd adds statefulness to an
> otherwise stateless ipfw configuration. Would an unstateful ipfw setup be
> less secure in this case?

Not necessarily, no.  The kinds of state being kept are quite
different, and there isn't any particular relationship between
them.  In fact, it's a lot more difficult to use stateful rules
with natd running, because the packets match differently depending
on whether they've been NAT'd already or not.



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