Computer Configuration > Policies > Centrify Settings > Mac OS X Settings > Firewall > Enable firewall logging
Log information about firewall activity, including all of the sources, destinations, and access attempts that are blocked by the firewall. The activity is recorded in the secure.log file on the local computer.
Enabling this group policy is the same as clicking the System Preferences > Security > Firewall then clicking Enable Firewall Logging in the Advanced firewall settings.
On Mac OS X Servers, enabling this policy has no effect.
This policy takes effect dynamically at the next group policy refresh interval without rebooting the computer.