Opinion Miner

http://www.revsys.com/writings/quicktips/ssh-tunnel.html

http://malcontentcomics.com/systemsboy/2006/07/send-remote-commands-via-ssh.html

Good tutorial http://www.unixwiz.net/techtips/ssh-agent-forwarding.html

http://blog.trackets.com/2014/05/17/ssh-tunnel-local-and-remote-port-forwarding-explained-with-examples.html