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

Digest authentication


HTTP Digest authentication is an improvement over the regular unencrypted HTTP Basic authentication mechanism, allowing user identity to be established securely without having to send a password over the network. HTTP Digest authentication is an application of MD5 cryptographic hashing with the use of the nonce value (for more information on the nonce value, refer to http://en.wikipedia.org/wiki/Cryptographic_nonce) to prevent cryptanalysis.

The following auth_param parameters are available for configuring HTTP Digest authentication helpers:

auth_param digest program COMMAND
auth_param digest utf8 on|off
auth_param digest children NUMBER [startup=N] [idle=N] [concurrency=N]
auth_param digest realm STRING
auth_param digest nonce_garbage_interval TIME
auth_param digest nonce_max_duration TIME
auth_param digest nonce_max_count NUMBER
auth_param digest nonce_strictness on|off
auth_param digest check_nonce_count on|off
auth_param digest post_workaround on|off

The parameters...