Removing Guest Session at login in Ubuntu 14.04
6069
How do I disable the guest session?
138995
Restricting SSH sessions for accounts on ubuntu server
99038
What happens if I attempt to delete Ubuntu itself while logged in?
30357
session protection
140643
Is it possible to disable default login pages in community?
149049
How to hide a trusted domain in the logon screen?
116267
Change user for automatic login
44584
How can I set keyboard layout for the guest session?
60995
How to remove session entries from LightDM?
60817
Ubuntu 17.10: Disable user list in GDM
98139
Show only login page to guests
37502
Does disabling root login enhance security?
104392
How do I remove log out, reboot, and shut down from GNOME shell application list?
15148
Prevent user from seeing previously visited secured page after logout
39294
What is a user-friendly way to log off other users?
88540
set password to not asked on login via the command line
44231
Remove sudo privileges from a user (without deleting the user)