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Every home computer or network router is given a public IP address. Every time a web site is visited the IP address is recorded and stored in a log on the server. These logs are used to trace all Internet activity. If the IP address is hidden then web access information can be hidden. Complete concealment of the IP address is not possible as it would make online access impossible. But IP address can be hidden from most servers.

Anonymous proxy servers use their IP address instead of the source IP address. The computer accesses the web sites indirectly using the proxy server. In order to use this web browser has to be configured using a URL and a unique port number. There are many free anonymous proxy servers on the web. Some of the most popular ones are WebWarper, Snoopblocker, Anonymouse, Anonymizer, Guardster, Cotse, The Cloak, IDZap, Mega Proxy, Bitesize Work, The Virtual Browser, Proxy Spinner, NoMoreLimits, and Proxify.

Anonymous surfing is browsing the web sites while your IP address is hidden. It provides protection of two kinds: protection from web sites as well as watchers of the network connection. A classic example of such surfing is in Iran where people surf anonymously to avoid being caught and persecuted. The four technical approaches to such surfing using a proxy server are:
1 Anonymous surfing on a web site
2 Anonymous surfing on a client application
3 Anonymous surfing on an anonymous web proxy server

SSL Tunnel or TSL is set up by the proxy server with the anonymous server. Some servers support HTTP while some others support FTP. In addition to the IP address being hidden the proxy servers also curtail traffic in the form of cookies, banners, scripts, referrer information and pop-ups. All anonymous proxy servers tend to be unstable. Most of them offer free services for a while and then they would ask you for upgrading the service to a paid one.