Almost all of us have to encounter proxies in our work environments. Sometimes those are useful (providing security and firewall), and sometimes those are just a pain. For example, at my work place, I have to go through a Squid proxy. In this tutorial, I will show how to set a Linux Mint/Ubuntu (and possibly other distros) computer to get “internet connection” from behind a proxy. By “internet connection”, what I mean is to get the Synaptic package manager (or APT) and other applications (like the browsers) send http requests through the proxy. Let’s get to it.