According to my Netgear Orbi router, my DNR-312L is configuring port forwarding rules to forward port external 80 to internal port 80 on the DNR-312L, and external port 443 to internal port 443 on the DNR-312L. From looking at the configuration, there is nothing about UPnP, so apparently I cannot disable this. I don't think it's a good idea to have port 80 and port 443 open on my router, as I believe that will result in hackers wondering what else they might be able to get to, drawing unwanted attention to my IP address.
I really don't like my DNR-312L being accessible like this, so I'm wondering if its possible to disable this port forwarding, beyond disabling UPnP on the router altogether. Any assistance is appreciated!