Jazz™ Team Server uses J2EE security roles for authentication, access to protected resources, and authorization for several repository operations. These roles are mapped to users and groups in a realm that is configured in the application server. When the server is configured to use the Apache Tomcat user database realm or a Lightweight Directory Access Protocol (LDAP) realm, Jazz Team Server can import users from the realm into the repository. Then, Jazz Team Server can display the roles, or groups, that are assigned to each user.
You can also configure your own realm for authentication and group membership in WebSphere® Application Server or Apache Tomcat. When you configure your own realm, Jazz Team Server cannot import users or display their roles, but those roles are used for authentication and authorization.