I want to accept and forward https traffic

Explain it to me like I was a third grader….

I have a couple of machines that I want to have accessible from the Internet. “Port forwarding,” the usual solution, would not be my preferred way forward, since some of the networks from which I connect to these machines block custom port assignments.

I have a machine on my LAN which is set up as a reverse proxy server. What I need is for my main router to accept new and unrelated traffic on ports 80 and 443, only, and forward all such traffic to the proxy server. If it was sent to a valid https subdomain destination, it gets forwarded to the proper port on the proper machine. If there’s no match, the packet dies there.

Also, I need to set this up over the Mikrotik mobile app using BackToHome, since I’m physically distant from the network at this time.

Excuse me while I go back to my lollipop….