Hi Dragan, actually, you use JAAS on the client side (which is a Java standard), there is not much JBoss specific stuff about this. To login, you need an implementation of "javax.security.auth.callback.CallbackHandler" (which provides user/password), and perform the authentication using this CallbackHandler: javax.security.auth.login.LoginContext loginContext = new LoginContext ("...", callbackHandler); | loginContext.login(); The JBoss "SecurityClient" is just an implementation of the CallbackHandler interface. Hope this helps a bit Wolfgang View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4205280#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...