Server IP block issue

Question

Hi,

On Win 2019 server or above, I used to block the IP range on Firewall. How to ensure one exact IP is whitelisted?

Answer 1

Hello Peter_1985,

Thank you for posting in Q&A forum.

To whitelist a specific IP address on a Windows Server 2019 firewall, you could create an inbound rule for it.

Then you could use PowerShell to Verify:

Open PowerShell as an administrator.

Run the following command to list all firewall rules and check for your specific rule:

Get-NetFirewallRule | Where-Object { $_.DisplayName -eq "Whitelist Specific IP" }

To check the IP addresses associated with the rule, use:

Get-NetFirewallAddressFilter -AssociatedNetFirewallRule (Get-NetFirewallRule -DisplayName "Whitelist Specific IP")

Reference:

Get-NetFirewallRule (NetSecurity) | Microsoft Learn

I hope the information above is helpful.

If you have any questions or concerns, please feel free to let us know.

Best Regards,

Daisy Zhou

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