Hello Stefan! I think I was not clear enough or/and you didn't follow the link from Nabble to [1].
Your client use two connections/ports to communicate with the server for the JMX stuff. It's not sufficient only to check the port 1099. You also have to check the second port. And if you not define this port in your server side JMX configuration (e.g. with the URL jmx:rmi:///jndi/rmi://localhost:1099/karaf-root), this port is randomly choosen and difficult to check. If you define the second port (e.g. with the URL jmx:rmi://localhost:44444/jndi/rmi://localhost:1099/karaf-root) you should also check if you can connect to the port 44444. Could you share the content from your org.apache.karaf.management.cfg file with us? [1] http://download.oracle.com/javase/6/docs/technotes/guides/management/agent.html#gdjou Best, Christian
