Re: JMX, RMI and firewalls

David Campbell wrote:
> Hi - we are using JMX to talk between a couple of Resin servers to
> invoke mbeans.  The problem is that whilst resin accepts
> -Dcom.sun.management.jmxremote.port=8181 when RMI is called it used a
> random high number port to communicate (in the example below it is
> 57726.  Is it possible in Resin to define a specific port for RMI in
> this instance?
>
> 11:20:14.859044 IP res01.57681 > res02.57726: S
> 2600566516:2600566516(0) win 5840 <mss 1460,sackOK,timestamp
> 2352882713 0,nop,wscale 2>
>
> Thanks
>
> Dave
Hi Dave,

RMI is a hard beast to tame.  There are many places where RMI calls
ServerSocket and/or Socket to do it's communication, and hence the
approach that we have had to take is to create a ServerSocketFactory and
replace the default RMIServerSocketFactory.  It takes care of the
unicast case, though for multi-cast it's still a bit hit and miss.

Seems as though there is a way using the ManagementFactory:
http://archives.java.sun.com/cgi-bin/wa?A2=ind0507&L=jmx-forum&D=0&P=1221

Check that out to see if that resolves the issue?

Damien