X11 forwarding over ssh

ssh -XYC user@server xterm

The options are:

1. X: enables x11 forwarding
2. Y: enables trusted x11 forwarding
3. C: compresses the communication
4. xterm: can be substituted with other commands that are available on the server

---

X11 forwarding over multiple ssh hops

Suppose you do not have direct ssh access to server2. You can access server2 via server1 over ssh. (localhost => server1 => server2)

1. In terminal 1:

   ssh server1 -L2200:server2:22

2. In terminal 2:

   ssh localhost -XYC -p2200 xterm

   It will run xterm on server2 and displays back to localhost.