TROUBLESHOOTING

Troubleshooting is the most important job of a network administrator. With good troubleshooting skills, you can diagnose problems and fix them before they become a major problem. Therefore, in addition to experience, you should know how to use the troubleshooting tools discussed in the following sections.

Using netstat and rpcinfo Commands

The netstat and rpcinfo commands have already been discussed in this book. They are briefly described here to emphasize their importance.

The netstat command shows all the open ports and servers running on a host. It also shows established connections. In addition to troubleshooting network services, there are many other uses of the netstat command. The rpcinfo command is the basic command ...

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