As I mentioned, JAAS is able for two important tasks: authentication and authorization of users. Now, let us see more about them. Authentication: Who are you? Authentication verifies that the user is who she/he claims to be. But user is also an entity and could be a person, a software entity or other instances of WebLogic Server (so called „resources“). WLS performs proof material typically through a JAAS LoginModule and JAAS authentication is implemented in…