Troubleshooting Broadband Linux Connectivity
This article is written for beginners who are having difficulty with their broadband connectivity. Please note that this article does not review how to get started with a broadband modem on Linux. I assume that at some point broadband connectivity had worked for your Linux system. Perhaps one day you find yourself opening the Firefox browser but only getting Timeout errors or Server Unavailable messages. Here are a few tips that have reconciled nearly all problems I have personally experienced with broadband connectivity.
I seem to remember a few threads on this forum expressing difficulty in getting Linux to connect to the Internet via Broadband. I thought this article at ReallyLinux.com might help.