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Chapter 13. Troubleshooting Your Interne... > Troubleshooting Internet Problems wi...

Troubleshooting Internet Problems with Windows TCP/IP Utilities

If you think you are connected to your ISP but still can't use Internet applications, you can use some of the command-line tools provided with Windows XP to trace TCP/IP problems. (TCP/IP is the network language or protocol used by the Internet; see Chapter 14 for an introduction to networking and protocols). To run the command-line utilities, open a Command Prompt box with Start, More Programs, Accessories, Command Prompt. Then type in the commands described next. If you're not familiar with command-line utilities you might take a look Launch Windows Help (Start, Help and Support), and search for the command names, e.g. “ping” and “tracert.” You can also open a Command Prompt window and type the command name followed by /?, as in

Ping /?


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