Simply following these instructions showing how to create an IPSec Security Policy specifying to block access to a specific IP address.
Step 1
Click on the Start Menu and Click on Run.
Step 2
Type “secpol.msc” and Click OK.
Step 3
When the Local Security Settings console opens, Click on “IP Security Policies on Local Computer“.
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Step 4
Right Click in the Right Window Pane and Click “Create IP Security Policy“.
Step 5
Click Next when the Wizard opens.
Step 6
Here you can name your new IPSec Security Policy. In this example, we named it “Blocked IPs”. When you are ready, Click Next.
Step 7
Click Next
Step 8
Click Next
Step 9
Click Yes
Step 10
Click Finish
Step 11
Uncheck the “Use Add Wizard” checkbox, then Click “Add…“.
Step 12
Click the “Add…” button.
Step 13
Uncheck the “Use Add Wizard” checkbox, then Click “Add…“.
Step 14
Click the dropdown menu for “Source address” and choose “A specific IP Address“.
Step 15
Here is where you enter what IP address you want to Block. In this example, we are going to block “129.12.74.220”.
Step 16
Click the dropdown menu for “Destination address” and choose “My IP Address“, then Click OK.
Step 17
Click OK
Step 18
Select the newly created Filter, and click on the “Filter Action” tab.
Step 19
Select the “SI – Deny” Rule and Click Apply.
Step 20
Click OK, then Apply and OK again to get back to the main console window.
Right Click on the newly created IPSec Security Policy, and select “Assign“.
Step 21
If successfull, it should state that the policy is assigned. Your server is now blocking all requests to that specific IP address.
