I got bored running command ssh -Y root@hostname everytime. So I created ssh config file my user. So my user connects remote computer with ssh command and allowed X11 forwarding.
edit ssh config file in your home directory
Add this line
I use ssh passwordless login (ssh keygen) for remote computers. Also clusterssh for executing remote commands one time.
ClusterSSH controls a number of xterm windows via a single graphical console window to allow commands to be interactively run on multiple servers over an ssh connection.