Book Image

Squid Proxy Server 3.1: Beginner's Guide

Book Image

Squid Proxy Server 3.1: Beginner's Guide

Overview of this book

Squid Proxy Server enables you to cache your web content and return it quickly on subsequent requests. System administrators often struggle with delays and too much bandwidth being used, but Squid solves these problems by handling requests locally. By deploying Squid in accelerator mode, requests are handled faster than on normal web servers making your site perform quicker than everyone else's! Squid Proxy Server 3.1 Beginner's Guide will help you to install and configure Squid so that it is optimized to enhance the performance of your network. The Squid Proxy Server reduces the amount of effort that you will have to put in, saving your time to get the most out of your network. Whether you only run one site, or are in charge of a whole network, Squid is an invaluable tool that improves performance immeasurably. Caching and performance optimization usually requires a lot of work on the developer's part, but Squid does all that for you. This book will show you how to get the most out of Squid by customizing it for your network. You will learn about the different configuration options available and the transparent and accelerated modes that enable you to focus on particular areas of your network. Applying proxy servers to large networks can be a lot of work as you have to decide where to place restrictions and who should have access, but the straightforward examples in this book will guide you through step by step so that you will have a proxy server that covers all areas of your network by the time you finish the book.
Table of Contents (20 chapters)
Squid Proxy Server 3.1 Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Mixing ACL lists and rules – example scenarios


We have seen various ways in which to construct ACL lists to identify different requests from clients, and replies in some cases. We have also learned about the basic usage of access list rules. In this section, we'll be defining configurations for the different scenarios that a Squid administrator may face in day-to-day life.

Handling caching of local content

When we deploy a proxy server, normally all requests to external and internal websites flows through the proxy server. If we have caching enabled on our proxy server, then it's going to cache everything that is cacheable, which will result in caching of content from internal websites also. When we cache content from internal websites, we are unnecessarily wasting disk space on the proxy server because the advantage of caching the local content is almost none, as we generally have lots of free bandwidth on LAN.