The following registry variables allow you to control the behavior of the Single Sign-On solution:
HKLM/SOFTWARE/Verba/Web/SSOLoginAllowedIP (the type is String)
IP address of the host that is allowed to send SSO login information
if set to 1, Verba will validate user's IP address on login
(default value is 0)
Highest security can be achieved when both parameters are used /enabled.