VPN too complicated? Use a IP-over-SSH tunnel instead

Some times you find yourself in a place where your Mac is safely tucked away behind a firewall. That’s great, but sometimes it is annoying as hell, because you need to access resources over FTP or contact people who’re on IRC. The normal solution would be to setup a VPN with one of your servers elsewhere and connect to the outside world that way. Unfortunately, in all their wisdom, sys admins have probably closed up the proper ports to access your VPN server as well.