LAN over internet via GG Client

GG Client is a software very similar to Hamachi but it is made specially for game. The most popular supported by GG client is DoTA (of course). It sets up much easier than Hamachi. But still, if you want better features, you'll need to pay for premium account. They got free account anyway but have most featured reduced. From my opinion, GG Client is much better than Hamachi, because it is automatically find game for you, unlike Hamachi that you must make your own group to play LAN over internet.

For more information, you can see at :
www.gg-game.com