I have encountered a similar problem, and I haven't tried it, because I used peanut shells, but today my peanut shells can't log in, so I didn't care. Theoretically, it is possible, but I don't know if telecommunications is black and white list management. In this case, changing the port is not acceptable. 1, IIS binds the port you want to bind. For example, bind 8 1, bind 8 1 port 2, map 8 1 port 3 on the router, and use URL forwarding alias to resolve the domain name to the corresponding address: xxx.xxx: 81followed by the port.