J2SE 5.0 and Later

J2SE 5.0 and later versions of the JRockit JVM use JMXRMI (JMX over RMI). This protocol uses one port for the RMI registry, which is configured with the -Xmanagement:port option, and a second port (on an anonymous port) for communication with the RMI server. Note that you cannot configure the port for the RMI server; however, you can write your own agent that defines a fixed port for the RMI server. Please see the following link for further information:

http://java.sun.com/javase/6/docs/technotes/guides/management/agent.html#gdfvv.

Table 3 lists the options available for the -Xmanagement flag:

-Xmanagement Options

Option	Description	Default
`authenticate`	Use password authentication	`true`
`ssl`	true	Use secure socket layer
`port`	What port to use for the RMI registry	7091

For a more comprehensive discussion about what these options mean, see:

http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html