Here is the problem definition: Suppose that I have an Ubuntu 12.04 based computer at home connected to the internet through a DSL connection. At my work place I am connected to the internet with limited access to some sort of websites (e.g. facebook). I would like to pass the filtering by connecting to my home’s computer internet connection. Is this possible by installing a proxy web server on my home’s computer? If so, how? If not, do I need to install a VPN for this purpose? (I’m aware of softwares such as Tor, Psiphon, etc., but I don’t want to use them).