From: "Geo" 

"John Beckett"  wrote
in message news:gl9ec2pt6qq57goev8tnfh4q92po1bsrld{at}4ax.com...

> - The first two routers responded with an ICMP time exceeded.
> - Routers 3 to 11 are configured to NOT respond in this way.
> - The target (4.2.2.2) responded with an ICMP port unreachable message.
>
> Another (far fetched) possibility is that your firewall blocks the port
> numbers that were used for routers 3 to 11, but not the port numbers for
> the successful packets (the ports increment for each hop).

It is unlikely that a router out on the internet would be configured to
block traceroute. It's more likely that his router/nat device is what's
blocking it.

Geo.

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