The Windows built-in firewall has been available since the time of Windows XP. Since then the Windows integrated firewall has been significantly improved and is now included in Windows Vista and Windows 7 protecting both, inbound as well as outbound connections applying various rules.
Users of Windows 7 find the Windows firewall in Control Panel / System and Security, whereas users of Windows Vista find the firewall in Windows Security Center. Clicking on Advanced Settings reveals the full capabilities of the built-in firewall.
The firewall should really be turned on in most cases - it configures itself automatically. Should you want to make configuration changes, or if you are just interested in looking under the hood of the Windows firewall, then we strongly recommend reading our expert’s articles you find below.