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Date:      Mon, 1 Oct 2001 13:25:28 -0700
From:      "Crist J. Clark" <cristjc@earthlink.net>
To:        "Karsten W. Rohrbach" <karsten@rohrbach.de>
Cc:        gkshenaut@ucdavis.edu, security@FreeBSD.ORG
Subject:   Re: How to config IPFW for enable ping and traceroute
Message-ID:  <20011001132528.C304@blossom.cjclark.org>
In-Reply-To: <20010929013148.B37579@mail.webmonster.de>; from karsten@rohrbach.de on Sat, Sep 29, 2001 at 01:31:48AM %2B0200
References:  <20010927061935.UUFZ16495.mta10.onebox.com@onebox.com> <200109271736.f8RHZrA20332@thistle.bogs.org> <20010929013148.B37579@mail.webmonster.de>

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On Sat, Sep 29, 2001 at 01:31:48AM +0200, Karsten W. Rohrbach wrote:
> stateful rules woud be better, i don't know if this can be done with
> ipfw (but i guess it should work somehow).

There isn't really a good way to do it with dynamic rules in ipfw(8).

> that's the ipfilter config for getting traceroute to work, for those who
> are interested...
> 

> # traceroute=30
> pass in quick proto icmp from any to 0.0.0.0/32 icmp-type 30 keep state
> pass out quick proto icmp from 0.0.0.0/32 to any icmp-type 30 keep state

If you actually find a traceroute program that uses the RFC1393
protocol, I'd like to see it.
-- 
Crist J. Clark                           cjclark@alum.mit.edu

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