Re: Understanding tracert output

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Thanks for following up Jack,

On a clean pipe with no firewalls, no NAT, no filters, all ports open, where
you have full visibility to/from the public Internet, there shouldn't be any
issues with tracert (ICMP).
In this context, I cannot understand why the last hop appears five times in
every tracert output targeted at hosts within my subnet. My guess is that
the routes are messed up on my perimeter network, but I don't know how to
prove it so that I call my ISP with a solid argument. Any insights?

Thanks.
Fernando


"Jack [MVP-Networking]" <jack@xxxxxxxxxxxxxxxxxxx> wrote in message
news:uPkJ0YP2JHA.3544@xxxxxxxxxxxxxxxxxxxxxxx
Hi
A Router acts like a NAT firewall and close all the ports to traffic that
was not generated from inside the Network.
I.e. running a tracert from the outside without special port forwarding
configuration would not work.
Jack (MS, MVP-Networking).



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