Written by Barry Dysert (last updated September 17, 2018)
In the tip titled Scanning Your System for Open Ports you discover how to see what ports are open on your computer. If you want to close an open port, you can do so by using the Windows Firewall (Windows Defender Firewall for Windows 10). For example, let's say you want to close port 5500 for all inbound connections. Perform the steps outlined below.
Figure 1. Windows Defender Firewall opening screen.
Figure 2. Windows Defender Firewall advanced settings.
Figure 3. Step 1 of the New Inbound Rule Wizard.
Figure 4. Step 2 of the New Inbound Rule Wizard.
Figure 5. Step 3 of the New Inbound Rule Wizard.
Figure 6. Step 4 of the New Inbound Rule Wizard.
Figure 7. Step 5 of the New Inbound Rule Wizard.
Port 5500 is now closed and cannot be used by any service.
This tip (13105) applies to Windows 7 and 10.
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