My active directory is made of multiple DC, tree looks like: | dc=mycompany | |-------- dc=rd | |----------- dc=it | |-------- dc=QA | In my jaas config, I've tried to set the URL to ldap://mycompany and the baseCtxDN="dc=mycompany". I do not try to connect with a user in a sub DC. To make it works, I need to provide the complete URL and the complete baseCtxDN. This parameters are options of the login module, they can not be dynamically change at runtime. How do you solve this problem of multiple DC ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4012911#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...