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Date:      Mon, 27 Oct 2003 08:11:07 +0000
From:      Colin Percival <colin.percival@wadham.ox.ac.uk>
To:        "Francis A. Vidal" <francisv-dated-1067846809.52fc3d@irc.dagupan.com>, <freebsd-security@freebsd.org>
Subject:   RE: Best way to filter "Nachi pings"?
Message-ID:  <5.0.2.1.1.20031027080917.020dd378@popserver.sfu.ca>
In-Reply-To: <1067242009.66521.TMDA@irc.dagupan.com>
References:  <20031027080240.GA9552@rot13.obsecurity.org>

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At 16:06 27/10/2003 +0800, Francis A. Vidal wrote:
>Wouldn't it break stuff like traceroute?

   Traceroute is fine -- it uses UDP packets.  Tracert, on the other hand, 
uses ICMP echo request packets, and it suffers.  I'm currently on a 
university network, and when there are connectivity issues (which seems to 
be quite often) I get very annoyed with the ICMP filtering.

Colin Percival




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