What port number is IDHUB hosted on?

Getting Started With IDHub
1

Registration page says
After installation of IDHub navigate to the IDHub Registration and Setup page.
Navigate to https://<idhub.fqdn>/setup.

What is idhub.fqdn OR what is the port number I need to use with my hostname to access the URL?

2

Port number is 443 as per - Self Hosted Requirements
idhub.fqdn is the host name of the machine used to install IDHUB.

3

for reverse proxy config see (we need an document link for this)

4

This link needs update.
The question is not answered.