ICMP Blocking Woes

Tue Sep 30 00:57:53 UTC 2003

SMB> Date: Mon, 29 Sep 2003 16:10:59 -0400
SMB> From: Steven M. Bellovin

SMB> No, they use icmp.  Or at least that's what the XP box
SMB> sitting next to me does...

AFAIK, it's been that way since Win95.  I recall a certain
vendor's dodgy ISDN router * * * on Windows traceroute, but
working fine under *ix... for whatever reason, said router didn't
like the ICMP traceroute, but returned unreachables in response
to UDP when TTL expired.

Eddy
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