Within the LDAP directory, you define users, user groups, resource classes, and resources, and these objects contain the attributes used to make security checks (for the Verify, Auth, and XAuth procedures). Micro Focus defines an LDAP schema for these objects and their attributes, but in many cases you can adapt an existing directory for at least part of this information, for example in order to reuse an existing repository of user information.
When it processes a security request, the module searches the configured LDAP repository for relevant rules and applies whatever it finds.
The External Security Facility API documentation is available, in doxygen format, on the Micro Focus Supportline website's Examples and Utilities page.