Tunngle
Tunngle is a p2p VPN client with integrated instant messenger and network browser. The program provides themed virtual IPv4 networks prepared which users can connect to, for example, the common playing a computer game on the LAN multiplayer mode. The software is since September 19, 2008 in a public and free beta test.
Operation
After successful registration by the client to a server of the manufacturer, a user can search a virtual network and to join this. All participants of the virtual network are interconnected through encrypted "tunnel" connected. This process is supported by STUN -like techniques without relaying servers of the manufacturer, to enable clients behind a NAT router to connect. Within a network, the receiving and sending of TCP, UDP and ICMP packets from and to broadcast and unicast addresses is possible. For each participant has an IP address in the range 7.0.0.0 / 8, which is bound to a installed on the client computer virtual Ethernet adapter.
Security
According to the manufacturer, all compounds of the software from the open source OpenSSL library with the 256-bit AES algorithm to encrypt. The exchange of the necessary key to be held 2048-bit RSA.
Use
Due to the built-in function for searching for networks, the program is particularly suitable for people who need fast built up network connections to other people. This is especially for playing computer games similar to a LAN party and for file sharing makes sense because as quickly participants can be found and can communicate this safely. Another advantage of computer games is the independence of servers the game manufacturer.
Costs
Use the Tunngle Basic version is free of charge, where the user advertisements are displayed. An additional paid premium version is available.