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Date: Thu, 28 Dec 2006 12:31:42 -0500
From: Gary Palmer <gpalmer@freebsd.org>
To: Stephan Wehner <stephanwehner@gmail.com>
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Cc: freebsd-net@freebsd.org, Matthew Hudson <fbsd@synoptic.org>
Subject: Re: Diagnose co-location networking problem
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On Wed, Dec 27, 2006 at 10:08:25PM -0800, Stephan Wehner wrote:
> Ok, this is a little unfortunate: I can't run traceroute from the client PC 
> (the service provider doesn't seem to like it). (Nor can I use ping)

/usr/ports/net/tcptraceroute

You should normally be able to use tcptraceroute to get path information
to systems that are listening on a TCP port (e.g. a web or mail server).
You can try ports that aren't open on the other end, but that may be
less useful.