[45079] in North American Network Operators' Group
ipsrvtrace
daemon@ATHENA.MIT.EDU (Steve Bellovin)
Tue Jan 15 17:21:06 2002
From: Steve Bellovin <smb@research.att.com>
To: nanog@nanog.org
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Date: Tue, 15 Jan 2002 17:20:28 -0500
Message-Id: <20020115222028.6F1247B4B@berkshire.research.att.com>
Errors-To: owner-nanog-outgoing@merit.edu
Quite a number of people have been asking me about ipsrvtrace. It's a
tool I wrote a few months ago, to investigate a service-specific black
hole. (Packets to one net to port 80 didn't get through; packets to
other ports or other nets did, and the network manager insisted that
there were no firewalls or transparent proxies in the way.)
Anyway -- the code is not (yet) released. It runs on NetBSD, FreeBSD,
and OpenBSD; a variant runs on Linux, but I haven't folded the Linux
changes back into the base version yet. If you need that sort of
functionality today, use tcptraceroute, which you can find at
http://michael.toren.net/tcptraceroute
--Steve Bellovin, http://www.research.att.com/~smb
Full text of "Firewalls" book now at http://www.wilyhacker.com
