I don't know if its related to this http://jira.jboss.com/jira/browse/JBAS-3947 but I see the following issue while trying to connect JConsole (either jdk 5.x or 6.x) remotely to JBoss4.2.2GA Here's the server configuration in run.sh to use the platform Mbean | JAVA_OPTS="$JAVA_OPTS -Djavax.management.builder.initial=org.jboss.system.server.jmx.MBeanServerBuilderImpl" | JAVA_OPTS="$JAVA_OPTS -Djboss.platform.mbeanserver" | JAVA_OPTS="$JAVA_OPTS -Dcom.sun.management.jmxremote" | JAVA_OPTS="$JAVA_OPTS -Dcom.sun.management.jmxremote.port=12345" | JAVA_OPTS="$JAVA_OPTS -Dcom.sun.management.jmxremote.authenticate=false" | JAVA_OPTS="$JAVA_OPTS -Dcom.sun.management.jmxremote.ssl=false" Here's the trace on JConsole | Nov 12, 2007 6:09:40 PM RMIConnector connect | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] connecting... | Nov 12, 2007 6:09:41 PM RMIConnector connect | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] finding stub... | Nov 12, 2007 6:09:41 PM RMIConnector connect | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] connecting stub... | Nov 12, 2007 6:09:41 PM RMIConnector connect | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] getting connection... | Nov 12, 2007 6:09:42 PM RMIConnector connect | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] getting class loader... | Nov 12, 2007 6:09:43 PM RMIConnector connect | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] failed to connect: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: | java.net.ConnectException: Connection refused: connect | Nov 12, 2007 6:09:43 PM RMIConnector close | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] closing. | Nov 12, 2007 6:09:43 PM ClientNotifForwarder terminate | FINER: Terminating... | Nov 12, 2007 6:09:43 PM RMIConnector close | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] RMI Notification client terminated. | Nov 12, 2007 6:09:43 PM ClientCommunicatorAdmin Checker-run | FINER: Finished. | Nov 12, 2007 6:09:44 PM RMIConnector close | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] Failed to close RMIServer: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: | java.net.ConnectException: Connection refused: connect | Nov 12, 2007 6:09:44 PM RMIConnector close | FINER: [javax.management.remote.rmi.RMIConnector: rmiServer=RMIServerImpl_Stub[UnicastRef [liveRef: [endpoint:[10.0.3.152:42167](remote),objID:[19c91f5a:116368d1bed:-8000, 6476555945438087490]]]]] failed to close: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: | java.net.ConnectException: Connection refused: connect | Note that I am able to open the JConsole from the same box using localhost:12345 Any tips on further troubleshooting would be greatly appreciated. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4103924#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...