If you have UPnP enabled port forwarding will configure itself.
I don’t port forward and I have both V1 and V2 hubs installed.
If you don’t want to use UPnP for some reason then the ports you need to forward are listed here.
There are listed on this page
"Double-check your network settings and make sure the following ports are open during initial setup: 11111, 9443, 443, 39500, 37, and the NTP port (123)"