i have the JBoss server and java standalson app client setup where the client passes username, password, and server address to access the some method built in java in JBoss Server side. It worked fine couple times but later on, it will no longer can access the server. JBoss server knows the username but role is null... so i can't access any of the method... I tried rebuild services and even reinstall JBoss didn't resolve this problems. I am kind of new to JBoss Authentication and Identification that JAAS provide.. I will be appreciated if anyone out there had this problem and knows how to fix.... thanks in advance.