Smoothwall logout URL?

[Koocha]

Hi all

 

Does anyone know if there's a URL to logout of Smoothwall?

 

I know you can get the the logout button by going to http://smoothwall/iclogin, but I'm wanting the URL to log out. We're wanting users on Chromebooks to be forced to login to Smoothwall by setting the default page to the logout URL with the username and password boxes.

 

I've tried checking the code but can't see what the button actually does.

 

Thanks!