There does appear to be some kind of bug here. I can connect JConsole using localhost and port 12345, but cannot connect remotely. I have tried using both Windows and Linux to run JBossAS, and to run JConsole. I even tried with the JDK 1.5 JConsole. Still no luck. I know this was working before because I gave a talk on this at a conference and I had it working between Linux and Windows, and I specifically recall reconfiguring iptables to open the ports. In addition I noticed, using some Windows tools, that JConsole is successfully connecting to the port, but then something goes wrong. I am guessing some security or access control issue. Googling hasn't helped so far - all of the posts I have seen fall into one of two categories: 1) "-Dcom.sun.management.jmxremote.ssl=false" is missing 2) all of the sys props are set, but there is no reply to the post View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187540#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...