Ops Manager 2007 RC2 - modifying the default port number for agent communication

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When deploying OM 2007 you might want to use the same port as the good, old MOM 2005 (1270) instead of the default OM 2007 (5723). To do that you need to modify this regkey on your OM server:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Operations Manager\3.0\Server Management Groups\MSDEMOMG]

"Port"=dword:000004f6

After that restart the MOM Health Service on your management server.

All the agents that get installed from the console from that point on will use this port number. However, old installations and new manual installaitons will need to be modified to use the new port setting. This can be done by running System Center Operations Manager 2007 agent setup from add/remove programs.