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TOPIC: time out during tracert

time out during tracert 14 years 10 months ago #3985

  • mikeb
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First, I'd like to say that I really enjoy reading this site and it has the best subnetting tutorial I have seen. Very nice job guys!

I'm fairly new to networking and I have a quick question about tracert. How come so often when I use it some host along the way almost always times out as if it's unreachable but you can connect to a site with a browser fine?

Like for example, right now if I do tracert a bunch of hops in the end time out, and even ping times out, but I can still connect to a site with a browser. What does this mean?

Re: time out during tracert 14 years 10 months ago #3988

This usually means that there is a firewall at the hop where it times out. This firewall has been told not to allow traceroute packets (with a low TTL value) through. As a result it times out.

You can sometimes get around this using traceroute on *nix boxes. Or using paratrace which traceroutes over a pre-established connection.
Sahir Hidayatullah. Staff - Associate Editor & Security Advisor
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