A firewall protects your computer from unwanted external access (e.g. hackers). Windows Firewall is a firewall program that is standard part of all Microsoft Windows versions starting with Windows XP.
Windows Firewall is a Microsoft firewall that comes standard with all Windows versions from Windows XP.
Windows Firewall helps protect your computer against hackers and malicious software. You can change the configuration to make the protection more or less strict.
Windows Firewall has the following features:
Windows Firewall screenshots
You can free download Windows Firewall and safe install the latest trial or new full version for Windows 10 (x32, 64 bit) from the official site.