I may not be asking this question correctly, so please excuse me if I'm woefully wrong.
I have a VM running inside Hyper-V. The host machine is actually a web server, so it has IIS, Internet connection and all that. What I want is to have this VM, which will also run IIS, accessible from the outside world. I understand that it will be impossible to have IIS listening on port 80 since it's already taken over by the host, so something like 8080 (or whatever arbitrary port) will be just fine.
I Googled all around and couldn't find anything on how to set up port forwarding with either Windows Firewall, or with Hyper-V itself.