Yes, that's the right term. Your posts are quite brief - best to provide more info at the start than have this back and forth.
You need to check the Port Utilization Guide. I know there is one for ICM - we had to configure a firewall to pass CTIOS monitoring streams and the ICM Port Utilization Guide provided the specs we needed. ICM supports CAD too, so maybe the CAD ports are the same in UCCX - would not bet on it though.
Anyway, you need to start somewhere so I'd look at that doc.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.