LinuxQuestions.org - How to tunnel everything over ssh

Ok, once and for all i would like to how how to solve my situation with my linux box.

I currently sit behind a squid cache proxy which allows access to the wider internet. I want to be able to securely use any service i want behind this proxy. I can SSH out of the network through this proxy which leads me to believe i can use ssh tunneling to access my server and push data to it.

Firstly, i have managed to get the following method to work however it is on a per month subscription basis which is not ideal when i have a box sat there doing nothing.

I use a sockifier which pushes all of my traffic through http-tunnel (http-tunnel.com) which in turn pushes all data it receives through the proxy as http data and returns whatever it needs (eg a ssh tunnel of sorts??)

I want to be able to do the same thing, use the sockifier to send all of my data out through some proxy (eg an ssh tunnel to my box??) and then that deals with it, returns the result and i am happy.

How can i do this using my linux box - what software do i need on the linux box?

My current setup works with everything as it is a socks5 proxy (well most things, not UDP reliably) - eg bittorrent, web etc etc

thanks!