For power users, Windows 11 offers "Windows Defender Firewall with Advanced Security." This interface allows for granular control over Inbound and Outbound rules. You can create custom rules to block specific IP addresses, restrict traffic to certain ports, or even prevent a specific application from ever reaching the internet. This level of control is particularly useful for preventing "telemetry" or data-sharing from software you don't fully trust. Why You Might Need a Third-Party Firewall
The Windows 11 Firewall, also known as Windows Defender Firewall, is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Its primary function is to block malicious traffic while allowing legitimate communication between your device and the internet or other networks.