[3820] in North American Network Operators' Group
Re: Access to the Internic Blocked
daemon@ATHENA.MIT.EDU (Vince Fuller)
Thu Aug 22 12:59:36 1996
Date: Thu, 22 Aug 96 9:52:26 PDT
From: Vince Fuller <vaf@WR.BBNPLANET.COM>
To: John Hawkinson <jhawk@bbnplanet.com>
Cc: Geoff Huston <gih@aarnet.edu.au>, nanog@merit.edu
In-Reply-To: Your message of Thu, 22 Aug 1996 01:52:45 -0400 (EDT)
So now I need to hack my traceroute to send ICMP_ECHO_REQUESTS instead
of high-port udp packets?
You'll also need to pursuade your router vendor to violate the ICMP spec,
which says that ICMP error messages (i.e. TTL exceeded) are never sent in
response to ICMP messages...
I suspect that this restriction is precisely the reason that "traceroute" uses
high-port UDP packets.
--Vince
