As far as I am aware Panorama doesn't have counters so are the unused rules identified based on counters or similar from the devices in the device-group or based on traffic logs?
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Each managed device maintains a flag for the rules that have a match. Panorama monitors each device, fetches and aggregrates the list of rules that do no have a match. On managed firewalls, that flag is reset when a dataplane reset occurs on a reboot or a restart,
Hope that helps!
Thanks and regards,
That is perfect exactly what I thought would happen, as in its logical and consistent. So the fact that my panorama logs are rolling every month won't affect the highlight unused rules.
i also noticed that this Flag is match to a rule by its "name" so if you changed the rule name it will be marked with no hits
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