VNC enables you to remotely access and control your devices from internal and external networks. It's very helpful when you want to remotely administer a computer. However, there are a few times when you would like to prevent somebody from accessing your computer and/or monitor what you are doing. Luckily, you can block VNC.

Method 1
Method 1 of 4:

Using the local computer firewall. (Windows)

  1. 1
    Open Windows Firewall with Advance Security.
  2. 2
    Click on Inbound Rules.
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  3. 3
    Click on New Rule.
  4. 4
    Under Rule Type, select Ports. Click on Next.
  5. 5
    Select TCP. Then enter the ports used by your VNC. Default is 5900 and 5800.
  6. 6
    Select Block Connection. Hit Next all the way to the end of the wizard.
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Method 2
Method 2 of 4:

Disable VNC Service

  1. 1
    Open Services.MSC.
  2. 2
    Look for VNC Server and hit Properties.
  3. 3
    Stop the service. You may also select Disable service.
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Co-authors: 7
Updated: June 29, 2021
Views: 56,109
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