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mod_proxy is an optional module for the Apache HTTP Server.^[1]

This module implements a proxy, gateway or cache for Apache. It implements proxying capability for AJP13 (Apache JServ Protocol version 1.3), FTP, CONNECT (for SSL), HTTP/0.9, HTTP/1.0, and (since Apache 1.3.23) HTTP/1.1. The module can be configured to connect to other proxy modules for these and other protocols.

One powerful feature of Apache is flexible virtual hosting—multiple virtual hosts on a single server. This is a convenient way to partition separate websites and applications. With mod_proxy it is possible to set various web framework-based applications up as virtual hosts as well.^[2][3][4]

mod_proxy can help to improve LAMP security ^[5] or to strip SSL from HTTP requests.^[6]

This module was experimental in Apache 1.1.x.^[7]

As of Apache 1.2, mod_proxy stability was greatly improved.^[8]

Since Apache 2.0, proxy features are divided into several modules in addition to mod_proxy: mod_proxy_http, mod_proxy_ftp, and mod_proxy_connect — moreover, caching is provided by mod_cache and related modules.^[9]

Since Apache 2.2, mod_proxy_ajp and mod_proxy_balancer have been added as well.^[10]

As of Apache 2.4, mod_proxy_fcgi was also added, to proxy FastCGI requests to another server, superseding mod_fcgid and mod_fastcgi.^[11]

• Some general purpose Apache modules
• Some programming language interfaces for Apache

• Apache module mod_proxy Archived 2009-10-10 at the Wayback Machine — for Apache 1.3.
• Apache module mod_proxy — for Apache 2.0.
• Apache module mod_proxy — for Apache 2.2.
• Apache module mod_proxy — for Apache 2.4.
• Apache module mod_proxy — for current Apache.