One thing that frequently fails when doing remote EJB communication using RMI is that not all ports are open. "jnp://10.0.0.2:1099" seems to indicate that only port 1099 has to be open, but in fact more ports need to be open. From the top of my head that's 1083 and I think 1089 too. I'm not 100% sure, but I think the exception will always "Failed to connect to server 10.0.0.2:1099", even when the connection to 1099 succeeded and the follow up connection to 1083 fails. I do wonder though if there's an overview somewhere that lists the exact requirements for remote EJB usage in Jboss AS. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243234#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...