Hi again, Not very helpfull the folks on here... I figured out by myself how to do this by Googeling and reading the Jboss source code: Yes, you can use Jboss interceptors to do the same job than with Corba/IIOP interceptors. Have a look to org.jboss.proxy.Interceptor (client) and org.jboss.ejb.plugins.AbstractInterceptor (server) This doc helped me the most: http://www.jinspired.com/products/jxinsight/jbosstracing.html (Found nothing on the Jboss site about writing my own custom interceptor...) I think you can write interceptors with Jboss AOP, thus you have to compile you code differently. -antonio View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3971607#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...