Apache: The Definitive Guide, Second Edition

9.1. Proxy Directives

We are not concerned here with firewalls, so we take them for granted. The interesting thing is how we configure the proxy Apache to make life with a firewall tolerable to those behind it.

site.proxy has three subdirectories: cache, proxy, real. The Config file from ... /site. proxy/proxy is as follows:

User webuser
Group webgroup
ServerName www.butterthlies.com

Port 8000
ProxyRequests on
CacheRoot /usr/www/site.proxy/cache
CacheSize 100000

The points to notice are that:

• On this site we use ServerName www.butterthlies.com.

• The Port number is set to 8000 so that we can change proxies without having to change users' Configs.

• We turn ProxyRequests on and provide a directory for the cache, which we will discuss later in this chapter.

• CacheRoot is set up in a special directory.

• CacheSize is set to 100000 kilobytes.

9.1.1. ProxyRequests

ProxyRequests [on|off]
Default: off
Server config

This directive turns proxy serving on. Even if ProxyRequests is off, ProxyPass directives are still honored.

9.1.2. ProxyRemote

ProxyRemote remote-server = protocol://hostname[:port]
Server config

This directive defines remote proxies to this proxy. remote-server is either the name of a URL scheme that the remote server supports, a partial URL for which the remote server should be used, or " * " to indicate that the server should be contacted for all requests. protocol is the protocol that should be used to communicate with the remote server. Currently, only HTTP is supported ...