I finally got around to trying Hamachi. If you don't know what it is, check out http://www.hamachi.cc. Basically, it's a VPN solution. Not so basically, it allows you to create a LAN over the Internet, very simply, quickly, and efficiently. It uses UDP and has no issues with NAT based routers. In short, anyone with basic computer knowledge can set up a very secure private network over the Internet.
Hamachi is free and works with Linux and Windows. There is an OS X version, but it's console based. The Linux version is console based too, but I won't be looking to try the OS X version until they get a GUI around it. Hamachi works by establishing a connection from you to the Hamachi servers. Once your Hamachi clients come online, the Hamachi server steps out of the picture leaving you with a FAST, secure VPN. I generally don't like solutions that require a third party like this, but it really does work well. They assign you an IP in the 5.0.0.0/8 network, so they have lots of address space and you could even set up DNS entries to your assigned IP.
The setup is horribly simple, even on Linux. I won't get into all of that here, but the possibilities are endless and have re-opened many scenarios for me. Network games, file sharing and remote administration suddenly become much easier to implement with Hamachi. If you've ever struggled with port forwards, dynamic DNS, dynamic IPs and the like, you NEED hamachi.
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