Changed ISP now can't get to websites / traceroute

Frank Knobbe frank at
Mon Jul 7 12:23:29 PDT 2003

On Mon, 2003-07-07 at 13:52, Stacey Roberts wrote:

> 2] Does anyone know of any reason why traceroute might fail on FreeBSD,
> but work on Win2K Pro?


FreeBSD uses UDP based traceroute while Windows boxes use ICMP based
traceroute. Some providers (like ComCast cable) block ICMP packets (so
tracert on Windows fails), but let UDP packets through (which means that
BSD based traceroute succeeds).


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