UNIX Configuration Commands

You should now understand the fundamental thought behind traditional IPv4 routing. However, at this point, you need to step back and look into the methods of implementation. First consider UNIX commands. These commands are traditional both in function and in age. Once you have learned how to use them under one UNIX, including Linux, you will know essentially how to use them in any UNIX. This section details how to use these commands under Linux to configure a basic two-network router with a single default route. You will also add additional specific routes to illustrate the meaning behind the fundamental thought of traditional routing.

The two primary utilities used in configuring IPv4 routing under UNIX are ifconfig ...

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