'''Important:''' Both sides need to run as root to create the tunnel device. Thus, 'ssh -w 0:0 root@www.hentschel.net' must run as root on the client side too.
<quote>
+---------------+ OpenSSH 4.3 +---------------+ | hentschel | tun0 -- Tunnel Interface -- tun0 | zm.home | | Has a tunnel | <------------------------------->| Has a tunnel | | and ethernet | 10.0.0.100 10.0.0.200 | and ethernet | +-------+-------+ point to point connection +-------+-------+ eth0 | creates a bridge | eth0
198.57.187.185 | that plugs machine B | 192.168.1.100
Routable | into network A | address | | here | | +-------+-------+ +-------+-------+ | Network A | | Network B | | The Internet | | 192.168.1.1/24| | Has internet | | Has internet | | | | NAT gateway | +---------------+ +---------------+
</quote>