Linux Networking-concepts HOWTO
$Revision: 1.12 $ $Date: 2001/05/04 20:58:43 $
This document describes what a network (such as the Internet) is, and the very basics of how it works.
What is a `computer network'?
What is the `Internet'?
3.1 How Does The Internet Work?
This IP Thing
4.1 Groups of IP Addresses: Network Masks
Machine Names and IP Addresses
Different Services: Email, Web, FTP, Name Serving
Dialup Interfaces: PPP
What Packets Look Like