1, Baidu ScanPort, which can be directly opened and run after downloading without installing software;
2. Fill in the ip address of the router for the starting ip and the ending ip. You can enter the approximate range of port numbers. If you are not sure, you can enter 1-65534 and click Scan.
4. After scanning the open port of the router, you can open a browser, enter the port number of http://ip, and press Enter to try to open it. If it cannot be opened, please change another open port number and try again.