1, intranet server 80: Your server is an intranet and you want to open a website (not to mention a text website or something).

2. You want to map the 80 port of the internal network server to the non-80 port of the external network (it is basically enough to solve this step).

Answer:

I basically understand your idea, but the general operation method is that the non-80 port of the internal network is mapped to the non-80 port of the external network, and you can visit the website at the same time.

That is to say, modify the port directly on IIS, such as changing 80 to 8080 (a common method), and then map it to the external network 8080, so as to solve the problem of mapping the non-80 port of the external network to the internal network.