User portal on multiple addresses

Hi,

I have an internet connection with several static IPs and an internal LAN.
On one external address (let's say address2) I am publishing an internal web site on port 443 with WAF.

Now I want to be able to access the user portal from inside the LAN and from the internet via external address1. What do I have to put in the listen address field of the user portal configuration?

I can't put there "any" because this does collide with the WAF config. The field only accepts one address. A network group is not accepted.

I don't want to change the port to a non-standard value.

Any suggestions?