my apologies to those who already know this:
if you want a quick readout of the status of the server, the drivers, placings etc or for getting GUID for banning...
http://<your_server_ip>:<HTTP_port>/ENTRY
or what ever port you have configured
Have a look at our Thursday's Prac Server Status.
A real cool app for admins is this admin app. All you need to type is the password once and then it will remember it the next time for the same server. Its a onscreen app that with a click of the mouse you can do session changes. Warn or kick drivers, warned drivers change colour each warning so you can tell who has already been warned.
http://www.assettocorsa.net/forum/index.php?threads/admin-tools-0-6.22159/