AuthorizationService
From OpenSimulator
The Authorization service is currently just a skeleton to be later expanded, however in grid mode it can be used to communicate an external authorization service.
Configuration
To point your region at an external Authorization service edit the file
bin/config-include/GridCommon.ini
add a section such as the following, altering the URI to point to your authorization server
[AuthorizationService] ; ; change this to your grid-wide authorization server ; AuthorizationServerURI = "http://localhost/auth.php"