Windows Forum

Ask something
Discussion Locked

pinging default gateways

0 helpful
5 replies

by 28

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.

A user was on her computer, the internet worked fine, she went to ipconfig and gave me her default gateway and ip address. From a remote location, right then, I could not ping them. Why would this happen?
(I am looking for a certain method of monitoring uptime at various offices. I was gathering the default gateways and using a site-monitoring tool to auto-ping the default gateways. But this has me worried my method is not so good.)

5 replies

by jcurl

the user's gateway (as reported to her when she uses ipconfig) is an internal NIC of her network's router, and may be behind a firewall or proxy that filters your ping.

by stillatit

In addition to the above, depending on the network configuration, the user's default gateway may very well be a non-routable address, where some router between the gateway NIC and the net does NAT.

Find out what happens if you use traceroute (tracert) to that address. At some point you will probably get all stars, showing that some router is not passing your ICMP packets.

Good luck.

This discussion is closed to new replies.