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Date:      Tue, 13 Mar 2001 23:55:55 -0800
From:      "Crist J. Clark" <cjclark@reflexnet.net>
To:        Dan Larsson <dl@tyfon.net>
Cc:        FreeBSD Questions List <questions@FreeBSD.ORG>
Subject:   Re: Strange traceroute issue
Message-ID:  <20010313235555.C496@cjc-desktop.users.reflexcom.com>
In-Reply-To: <Pine.BSF.4.33.0103131126350.71577-100000@hq1.tyfon.net>; from dl@tyfon.net on Tue, Mar 13, 2001 at 11:27:54AM %2B0100
References:  <20010308225855.T1367@cjc-desktop.users.reflexcom.com> <Pine.BSF.4.33.0103131126350.71577-100000@hq1.tyfon.net>

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On Tue, Mar 13, 2001 at 11:27:54AM +0100, Dan Larsson wrote:
> On Thu, 8 Mar 2001, Crist J. Clark wrote:
> 
> | On Thu, Mar 08, 2001 at 07:24:52PM +0100, Dan Larsson wrote:
> | > We have setup a firewall so that traceroutes can
> | > be done from hosts on the inside. This works perfect
> | > for all Microsoft based clients (WinNT) but failes
> | > for all FreeBSD clients. What could I be missing here?
> |
> | Windows and UNIX-type OSes do traceroute (or tracert) differently.
> 
> Ok. What is the difference?

Windows tracert sends out ICMP echo requests (pings) with incrementing
TTLs rather than UDP.
-- 
Crist J. Clark                           cjclark@alum.mit.edu

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