Its not trivial (afaik) to route all traffic over an OpenSSH connection on most platforms is it? I mean you can have it act as a SOCKS proxy without much trouble but there's no easy way to route DNS lookups over it is there?
It is trivial, I use this simple script to open an SSH tunnel to a remote host, assign me and the remote host private IP on tunnel interfaces (/dev/tun0), setup a pointopoint route between them, nuke my regular routing table & and fix it so my default route points down the newly created tunnel.
I wouldn't really call that trivial compared to enabling a VPN connection in most operating systems (i.e. clicking on the vpn icon and saying enable).
Also it appears to require root access on the remote machine which would make it difficult to securely let a few people use it. Definitely a useful script for a quick linux to linux tunnel.
