track ip addresses, phone numbers, etc

Check if you're behind a Proxy Server

By using a proxy server, your IP address will be hidden from websites and other web services that you use. Any web resource you access can gather personal information about you through your IP address. Anonymous proxy servers hide your IP address thereby saving you from vulnerabilities concerned with it.

Here are the variables sent by the server


Setting up Web Proxies in Mozilla Firefox

Setting up Web Proxies in Internet Explorer