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Advanced Squid

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Squid is a free caching proxy server that runs on Linux and many other operating systems. Many Linux users who have used Squid have taken advantage of its simple setup, and ignore or overlook its advanced features. Here's an introduction to some of those features and how to use them.

Once you know the basics, you can move on to advanced topics such as access control lists (ACL), proxy authentication schemes, delay pools, and blocking pornography.

Squid has one primary configuration file, squid.conf. This file is generally located in /etc/squid/, or if you compiled Squid from source, the default location is /usr/local/squid/etc/. You'll be editing this file, so it's wise to make a backup copy of it before you make any changes.

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