ISP question [ was traceroute , pls ]

Collins Richey crichey at
Sat Oct 18 09:25:16 PDT 2008

On Sat, Oct 18, 2008 at 7:33 AM, David A. Bandel <david.bandel at> wrote:

> Then change the port.  I can't believe they'd be blocking all udp
> ports.  And if they are, you have the ability to traceroute via tcp
> (and I'm sure they're not blocking port 80).
> man traceroute

Wow, that one's a keeper. A udp traceroute dies out after about 19
hops, but a -T traceroute (root only) gets to the destination. Take
that, Comcast.

Collins Richey
     If you fill your heart with regrets of yesterday and the worries
     of tomorrow, you have no today to be thankful for.

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