Log Me In Hamachi

LogMeIn Hamachi is a zero-configuration virtual private networking (VPN) application. Hamachi is a program that allows you to arrange multiple computers into their own secure network just as if they were connected by a physical network cable. Hamachi gives you LAN over the Internet. Virtually any application that works over local/home networks can also be used over Hamachi networks. Just think: Windows File Sharing, iTunes, Remote Desktop, Remote Assistance or even gaming -- all fully encrypted, authenticated and peer-to-peer.

http://www.hamachi.cc/

Filseclab Personal Firewall

Block attacks from worms, viruses, and Trojans. The double filter system provides double-layer protection. User rules allow for customized configuration.

http://www.filseclab.com/eng/products/firewall.htm