Hamachi - Free P2P VPN Solution
Hamachi is a zero-configuration virtual private networking application with an open security architecture and NAT-to-NAT traversal capabilities.
What does this mean? Hamachi allows you to establish secure direct connections to computers that are not accessible otherwise due to the restrictions of firewalls and NAT routers. You essentially create your own private network! “Use Windows File Sharing, Remote Desktop, play LAN games, Run private Web or FTP servers. Communicate directly. Stay connected.”
Learn more about Himachi on Steve Gibson’s podcast: Security Now: Episode 18.