proxy

In WWW world, proxy usually refers to the intermediary that retrieves information from other sources (e.g., websites) for the client. This is sensible when:

• the client cannot directly connect to the resources, e.g., some ISPs’ firewall blocks these resources erratically or deliberately;
• the client does not want to disclose his/her info (e.g., IP address) to the resources

There are different types of proxy: web-based proxy, open proxy and tunneling.