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2. Before We Start

Let's imagine the following situation:

2.1. What do we need

Believe it or not, shaping the incoming traffic is an easy task and you don't have to read tons of books about routing or queuing algorithms.

To make it work, we need at least Squid proxy; if we want to fine tune it, we will have to get familiar with ipchains or iptables and CBQ.

To test our efforts, we can install IPTraf.

2.2. How does it work?

Squid is probably the most advanced HTTP proxy server available for Linux. It can help us save bandwidth in two ways:

With that, we can tell the Squid to download these kinds of files at a specified speed (in our example, it will be about 5 kbytes/s). If our LAN users download files at the same time, they will be downloaded at about 5 kbytes/s altogether, leaving remaining bandwidth for web pages, e-mail, news, irc, etc.

Of course, the Internet is not only used for downloading files via web pages (http or ftp). Later on, we will deal with limiting bandwidth for Napster, Realaudio, and other possibilities.

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