2. To view the open ports of the local computer, you can use the netstat command to click the Start menu in the lower left corner of the screen. Click "Run", or you can use the WIN+R key combination on the keyboard to quickly bring up the "Run" column. Enter "CMD" in the run column and click OK.
3. The network administrator uses the three default port numbers of the router (80, 1080, 8080), and can directly enter the routing IP address: port number in the browser. If the router supports custom port numbers and the network administrator uses custom ports. With the general method, it is impossible to find out which port the router implies.
4. Setup steps: First, use a network cable, one end of which is connected to the broadband access line, and the other end is connected to the WAN port of the router (blue). Then connect one end of the other network cable to the LAN port (yellow) of the router and any of the four ports. The other end is connected to the computer.
5. The router checks the port number. Unless it is a large router or a network exam such as CCNA, it will generally exist in the router simulator or the exam description. Your question is not clear.
6. As shown in the gateway page of the router above, click the DNS server, and a list will appear on the right. In the list, you can see the information of all devices connected to the router. As for the information of other ports, you can view the information of WAN port in the system function and system routing table. The above picture belongs to LAN port information.