Windows Firewall
Computer program
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Windows Firewall is a firewall component of Microsoft Windows. It was first included in Windows XP SP2 and Windows Server 2003 SP1. Before the release of Windows XP Service Pack 2, it was known as the "Internet Connection Firewall." Wikipedia
Operating system: Windows XP SP2 and later; Windows Server 2003 SP1 and later
Other names: Microsoft Defender Firewall; Windows Defender Firewall; Internet Connection Firewall