In this paper, I discuss a technique to get into your office computer using ssh tunneling with some cool tricks. You don't need anything much to implement this, not even an open port on the firewall. All you need from your employer is the http(s) proxy which most of the companies provide. This paper shows how an employee can ridicule the firewalls of the company by facilitating the access to the company intranet using easily available resources.
Here is the problem scenario - "You work with a company 'XYZ'. At office, you cannot access internet directly and you 'browse' internet using HTTP(S) proxy. Back at home, you have an internet connection. You want to access the office computer from home, but you don't have the VPN access." How do you do that? Read the paper for the solution.
Disclaimer: Please use your brain before using this technique. You can be kicked out by your employer for using it. Don't blame me.
Here is the link to blog-entry:cheers, ^manu
--------- Manu Garg"Truth will set you free!"