Hi henry. Yes, you can modify the omniport. First, vi the global file (/etc/opt/omni/options). By default, the port number is 5555. So that if you want to change to another port, you asign the new port:
Second, you have to modify in the /etc/services file. default: omni 5555/tcp # OMNIBACK-II
Then stop and start again all of the services. To mornitor the inet, you can see in the /var/opt/omni/log/inet.log
In DP 10.10 The registry path is HKLM\SOftware\Hewlett-Packard\OpenView\OmniBackII\Common\InetPort, and the re is no file C:\ProgramData\OmniBack\config\options. Neither an entry in c:\windows\system32\drivers\etc\services. The default port is 5565, too. And there is a "omnicc -update_local_port 12345" that does the job!