Understanding WAS authentication
By itself, WAS has no single directory for an application to use when setting up authentication. The access to an application is granted through the directories you configure WAS to use for authentication. All applications installed in the same cell and that use the same Deployment Manager will use the same directories. There are four types of directory configurations in WAS:
Local operating system registry
LDAP server
Federated repository
Custom repositories
A local operating system registry uses the directory for the operating system where WAS is installed. For example, if you install WAS on a Windows 2008 server, the local registry would be any users and groups defined locally in Windows on the install machine.
LDAP server is another type of directory configuration. Even though there is no built-in LDAP server under WAS, you can configure the WAS directory and authentication mechanism to point to an external LDAP server. WAS then uses that server as your...