Web-based circumvention systems

A web-based circumvention system is a special web page that allow users to submit a URL and have the web-based circumventor retrieve the requested web page. There is no connection between the user and the requested website as the circumventor transparently proxies the request allowing the user to browse blocked websites seamlessly. Since the web addresses of public circumventors are widely known, most Internet filtering applications already have these services on their block lists, as do many countries that filter at the national level. Examples of such systems are Proxify, StupidCensorhip, CGIProxy, psiphon, Peacefire/Circumventor.