] The University of Toronto's Internet Censorship Explorer
] permits anyone with a Web browser to test the limits of
] certain national and organizational Internet-blocking
] schemes. Users simply enter a target URL and a country
] into a search field on the Censorship Explorer's website.
] The software then scans the ports of available servers in
] that country, looking for open ones. By using the foreign
] computer as a proxy server, ICE then attempts to visit
] the target URL from behind that country's firewall. The
] result is either the visible website or a "page blocked"
] message is then returned to the user.