Have you ever wanted to visit sites from a location that denied access to those sites? What you need is the ability to create a secure and encrypted ssh connection to tunnel your browser traffic through.
If you have access to a remote machine by ssh you can set up Firefox, or any other SOCKS v5 enabled application, to tunnel its connection through ssh.
Making ssh tunnel:
ssh -C2qTnN -D 8080 username@remote_machine.org
Configure Firefox for the proxy
Manual proxy configuration:
SOCKS Host 127.0.0.1 Port 8080
check the box for "SOCKS v5"