16.1. Introduction to Linux Networking
A Linux system can be connected to a network or the Internet in several different ways—for example, via an Ethernet network card, a token ring card, or a PPP (Point-to-Point Protocol) connection over a dial-up modem. If your system is never connected to a network, then this chapter is not for you. However, if you do need to set up network connections (especially to a local area network), then read on.
Every Ethernet network card, PPP connection, wireless card, or other device in your system that can be used for networking is known as an interface. Interfaces are usually associated with a piece of hardware (like a network card), but they can also be dynamically created (like PPP connections). For an interface ...
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