Internet not working

[dfuerst]

Ok, I've got a Dell Optiplex 740 with a built-in card running Mint 9 (I can't install later versions, but that's another issue!)

I'm running two PCs in my office at working, the aforementioned + a Windows PC. They are attached to the network via a switch, since I only have one ethernet drop available in the office.

The Windows PC works perfectly -- that's how I'm posting this.

The Mint PC was working until I needed to reinstall the system (long story). Now, the Mint PC is connecting to the network. I can even pull up some sites that are local (e.g., owa.med.wayne.edu).

However, the Mint system chokes on other sites, such as this one, cnn.com, etc. I get a connection timed out error from Firefox. The error is not Mint specific -- I also get it in Debian, which I tried -- same issue.

Help!

Darren

[osmosys]

1. Ping loopback.
2. Ping your host IP
3. Ping your local gateway
4. Ping an internet server (that doesn't work)
5. Run a tracert on the server and see where it stops.
6. Figure out if it's a DNS problem, or not (try changing them).

Boot into run level 3 (no x windows and try to hit the sites with lynx... that will tell you a lot)
Update your network driver (be careful though)