tun is a simple tunneling application. It uses the /dev/net/tun device (virtual) which is used to separate the "real" network traffic from the tunnel-traffic. This means, the /dev/net/tun interface makes possible to route data thru the tunnel with the common linux kernel routing. We're also able to define rules for the routing (with iptables), so the routing can be made application-specific. This means for example, that just the smtp-traffic will be sent thru the tunnel, so a smtp-server of an extern network can be used for your purposes. The whole project is developped and tested on SuSE Linux 8.2 with the standard kernel 2.4.20-4GB. -> please be shure that your distribution contains a valid if_tun.h file! (refer to documentation INSTALL, point 3. Start) Please visit our project page on sourceforge.net [http://sourceforge.net/projects/gophers-den/]
