PLANET SG-1000 - Manual (Page 97)

STEP 4 When user_01 is going to access to Internet through browser, the
authentication UI will appear in Browser. After entering the correct user
name and password, click OK to access to Internet.
STEP 5 If the user does not need to access to Internet anymore and is going to
logout, he/she can click LOGOUT Auth-User to logout the system. Or
enter the Logout Authentication Web UI (http:// LAN Interface:
Authentication port number/ logout.html) to logout
Access to Internet through Authentication Web UI
Logout Auth-User Web UI