In addition to listening to the port you specified (1100) the JMX server also listens to a randomly chosen (ephemeral) port.
Check, e.g. with lsof -i|grep java if you are on linux/osx, which ports the java process listens to and make sure your firewall is open for the ephemeral port as well.
除了JMX server指定的监听端口号外，JMXserver还会监听一到两个随机端口号，
可以通过命令：lsof -i|grep java |grep <pid> 来查看当前java进程需要监听的随机端口号，
-Djava.rmi.server.hostname=192.168.0.1
-Dcom.sun.management.jmxremote=true
-Dcom.sun.management.jmxremote.port=9090
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false
原文：http://www.cnblogs.com/webundle/p/5955906.html