SSH allows you to forward different types of information. It's sometimes useful to smuggle other types of internet traffic into or out a network using SSH. For more information on the different forwarding that can be used  check out https://help.ubuntu.com

Were going to look at port forwarding using X11 to run remote gui based applications locally

If you don't already have openssh-server installed let's go ahead and install it

sudo apt-get install openssh-server

Once it's installed you can do a ssh localhost and make sure it's runing.

From your client computers terminal all it takes is adding a parameter to your ssh command

ssh -v -X user@server

-v: Verbose
-X: port X11

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