PortForward.com is proud to offer help setting up port forwarding on your router or firewall. Many Internet users are not aware of how to configure their router or firewall in order to use applications like Peer-to-Peer file sharing (PtoP), Internet Games
And she has techniques for getting out of a mingle, including one she calls "the human sacrifice." That's where you escape a boring conversation by grabbing some other poor guest and throwing him into the conversation in your place.
SSH port forwarding explained in a clean and visual way. How to use local and remote port forwarding. What sshd settings may need to be adjusted. How to memorize the right flags.