1. In the lower left corner of the desktop, click Start, locate the Control Panel, and then click Open.

2. Next, you need to click "Windows Firewall", as shown in the figure below.

3. Click "Turn Windows Firewall On or Off" to confirm whether Windows Firewall is on.

4. Go back to the previous level and click "Advanced Settings".

5. You can view the ports in the Advanced Security Window Firewall window, as shown in the following figure.