I created the prototype where client machine logs into the JBOSS server using login-module (with properties files) and JAAS.... It seems like it was working fine but at some point it starts failing where user doesn't have right role... everyone's role becomes null and I can't access anymore. So i undeployed and redepolyed my jar files on jboss server but same results.... I even rebuilt jar files and tried.... but nothing worked.... I am not sure what is responsible for this strange problems that i having....