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Date:      Wed, 10 Feb 1999 09:45:00 -0700 (MST)
From:      wildcardus freakis <wildcard@dax.belen.k12.nm.us>
To:        John F Cuzzola <vdrifter@ocis.net>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: ipfw and natd
Message-ID:  <Pine.BSF.3.96.990210093900.11140A-100000@dax.belen.k12.nm.us>
In-Reply-To: <Pine.LNX.3.96.990209224124.20336A-100000@ocis.ocis.net>

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Yes and no...if it is coming in from the outside and you have the outside
interface specified in a filter line it is...i.e.  I send a packet you you
containing SYN flags which your filtering against my packet will be
dropped.  If I am inside your firewall my packet which is destined for and
inside machine is not diverted so will not be filtered.  If I am inside
going out the packet is filtered.  So specified filters are applicable.

This is to the best of my knowledge so...correct me please if I am wrong.

BTW teardrop SYN packets unless filtered against cut right through
firewalls...I know I've done it.

-Ta-
Sasha



> Hi, a quick question:
> when a packet is diverted (ipfw divert) to natd and natd 're-injects' the
> re-assembled packet back into the packet stream,- is this newly injected
> packet still checked against the firewall rules?
> 
> thanks in advance.
> 
> ps: FreeBSD is the Superior OS :)
> 
> 
> 
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