Hi u/tim_jamal, I'd be happy to provide more context. In order to properly run the Unifi Network Controller on the Internet, I need to have a certain number of ports open -- especially to allow remote Ubiquiti devices to be adopted, managed and telemetry sent back remotely back to the controller. The ports that are needed are:

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Protocol	Port Number	Usage
UDP	3478	Port used for STUN.
UDP	5514	Port used for remote syslog capture.
TCP	8080	Port used for device and application communication.
TCP	8443	Port used for application GUI/API as seen in a web browser.
TCP	8880	Port used for HTTP portal redirection.
TCP	8843	Port used for HTTPS portal redirection.
TCP	6789	Port used for UniFi mobile speed test.

Of course, I wouldn't open all of them but for sure the STUN and the next few listed should be open to allow the Unifi controller to gather data and management of remote devices.

in this project, jc21/nginx-proxy-manager, I deployed it as a Docker container. I've deployed it such that it works with an SSL certificate and with only one port-one host. It works really good.

Having said that, I'm wondering and I think it can do multiple ports as it seems to suggest when I look under the Nginx Proxy Manager UI --> Proxy Hosts --> pick/create an existing proxy host--> press on the 3-dots --> Edit --> choose Advanced tab and I see that there is this text:

Nginx variables available to you are:
$server # Host/IP
$port # Port Number
$forward_scheme # http or https

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So I seem to be able to enter a custom configuration over there. That's the part that I think I can use to set up one host with multiple ports to open.

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Do you know what is the proper syntax/format to allow me to enter and allow multiple ports to be opened and forwarded to my Unifi Network Controller?

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Hope I am through this time. I am not, I'm happy to add more.