Log in to the management interface of the router according to the instructions of the router (if the instructions are lost, try to enter 192. 168. 1 enter in the address bar of the browser. Some routers default to 192.438+068.0. 1 enter. In general, the default account and password of various routers are usually. This allows you to enter the management interface of the router.

Find the "Security Settings"-"Remote WEB Management" page, and you can change the default port number 80 to any port number you want (for example, you mentioned 8080, but you can also change it to something else).