...
Terminal emulation:
The recommended terminal emulation program is gnome-terminal. Other choices which are installed include xterm, mate-terminal, and xfce4-terminal.
Screenlock/Screensaver:
You can adjust the timing and behavior of the screenlock for your session. Once you have established your session, look for "System" (upper left) and go to "Preference"->"Look and Feel"->"Screensaver".
Browser access:
We recommend using the NoMachine client application (as described above), but if you want to try the browser access, you can use this URL:
https://nx.slac.stanford.edu:4443
...