It is very easy to block a single IP address on a Linux server but Windows Default firewall doesn’t allow us to block a single IP address on the server or for particular ports. However Microsoft released this and introduced IP Security Polices in their Local Security Polices option in the release of their SP2. But most of us are not aware of this option and we mostly adopted third party firewall and pay for their heavy license. However Firewall onl Windows 2008 Server is far more advanced than that on Windows 2003.
It would not be the case now as I have listed detailed steps along with the images on how to block IP using the IP security policy in Windows. This option is also available in XP as well as Windows 2003 Server edition.
How to BLock IP Using Windows:
You can either open MMC from START >> RUN >> MMC and add a new Snapin for IP Security policy with steps below: