I asked the network guy and he seems to be not interested leaving me 'unsafe'.
So I had to find my own way. I looked for some proxies like the most widely used one from ultrasoft or else. But I failed with them. Finally, I got two of them that are open source projects and helped me breath properly :
TOR: " Tor is a system intended to enable online anonymity, composed of client software and a network of servers which can mask information about users' locations and other factors which might identify them. Use of this system makes it more difficult to trace internet traffic to the user, including visits to Web sites, online posts, instant messages, and other communication forms. It is intended to protect users' personal freedom, privacy, and ability to conduct confidential business, by keeping their internet activities from being monitored. The software is open-sourceand the network is free of charge to use."
[Picture Courtesy: TOR web site]
JAP/JonDonym : "Java Anon Proxy, also known as JAP or JonDonym, is a proxy system designed to allow browsing the Web with revocable pseudonymity. It was originally developed as part of a project of the Technische Universität Dresden, the Universität Regensburg and Privacy Commissioner of Schleswig-Holstein. The client-software is written in the Java programming language."