This is useful when your own access is limited, but you can reach a server that in turn can reach others that you can't. In addition, the user is kept as anonymous as possible from any servers. Common uses include: anonymous proxies, other personal uses, VPN-like functionality, and others. It's very simple to install, and very configurable.
When an HTML resource is retrieved, it's modified so that all links in it point back through the same proxy, including images, form submissions, and everything else. JavaScript and Flash apps are similarly "proxified". Once you're using the proxy, you can browse normally and (almost) forget it's there.
CGIProxy can run in four ways: as a CGI script, as a mod_perl script, as a FastCGI script, or with its own embedded secure HTTP server. Configurable options include text-only support (to save bandwidth), selective cookie and script removal, simple ad filtering, access restriction by server, custom encoding of target URLs and cookies, and more-- there are more than 70 options so far. It requires Perl 5.6.1 or later, but works better with a more recent version.
What's New:
- added Spanish and Polish messages, for a total of 14 languages-- see the translation page if you want other languages supported
- now supports LZMA-compressed SWF files, if you have the IO::Compress::Lzma Perl module installed-- install it by running "./nph-proxy.cgi install-modules" again
- many bug fixes, making many sites work better