This detection rule identifies potential unauthorized modifications to Windows Firewall settings through changes made in the registry. Specifically, it monitors registry changes related to firewall policy rules under the key 'HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules'. By tracking specific commands such as 'netsh advfirewall firewall add rule' and 'netsh advfirewall firewall set rule', the rule aims to detect anomalous activities that could indicate malicious or unintended changes to firewall configurations. As firewall modifications can significantly impact network security and exposure, timely detection allows for prompt investigation and remediation of potential threats.