Hamachi is a small freeware application that creates virtual private networks (vpn) on the fly without configuration at all - well almost. You can download the application from the hamachi homepage, once downloaded install and run the software. Versions for Windows, Linux (installation guide) and Macintosh OS X exist, means everyone should be happy although the linux and mac versions are console only while the windows one comes with a gui. Before I go into configuration details I want to describe the main advantage of Hamachi, it gives you LAN over the Internet.