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Date:      Sat, 15 Jun 2002 17:48:26 -0700 (PDT)
From:      "Nielsen" <nielsen@memberwebs.com>
To:        <cykyc@yahoo.com>, "Ilia Chipitsine" <ilia@cgu.chel.su>, <questions@FreeBSD.ORG>
Subject:   Re: ipfw: stateful rules & UDP/ICMP
Message-ID:  <20020616004826.ADAAA37B408@hub.freebsd.org>
References:  <20020615170808.81047.qmail@web20604.mail.yahoo.com>

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I think ipf does stateful ICMP based on not only source and dest ips but
type and all the rest. UDP is based on source and destination ports, in
addition to source and dest ips.

Nate

> When I was looking into this for ICMP a couple months back w/
> probably a 4.5 -S branch, I believe the structure and matching used
> didn't take into account the ICMP type and code; iirc, it only
> looked at the src_ip, src_port, dst_ip, dst_port, and proto.



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