Setting up UCS behind a NAT using portforwarding

I’m new to UCS and only know the basics of network setups (have only configured simple linux webservers without as many services and features as UCS).

I would like to set up UCS on my home server and make it reachable on the web. However when I specify my public domain name during installation it seems to be used to setup the network interface. Not using my domain but an unknown one doesn’t work either since the domain is used to set up all kinds of things (like certificates and dns settings).

What would be the proper/best way to configure/install a server using this setup?