As a complete newcomer to using Linux, installing Ubuntu on a new hard drive was completely painless, but I know need to work out how to install a VPN on Linux so I can work from home. I am would be most grateful if anyone could point me in the direction of a VPN that is (ideally free) would work with a Windows server and firewall. I put my hands up and say I have never set up a VPN on Windows so am starting from a non-existent knowledge base!