What you want to ask is why the search port number on the web page can't get in? Check whether there is such a record in the hosts file in the path of c: \ Windows \ System32 \ drivers \ etc: "127.0.0.1localhost", if not, you can add it.

In our life, some common ports will be ignored. This is the behavior of the browser. For example, http is 80 and https is 443. These two ports can be ignored.

The so-called port, just like the house number, the client can find the corresponding server through the ip address, but the server has many ports, and each application corresponds to a port number. Only through the port number similar to the house number can the client really access the server.