These logs are for the connection between PAN-OS and the DNS Security cloud service.

( subtype eq rtsig ) and ( severity eq medium )

( eventid eq cloud-fail-refused ) and ( object eq dns-signature ) and ( description contains 'dns-signature cloud service connection refused.' )

( eventid eq cache-init-fail ) and ( object eq dns-signature ) and ( description contains 'dns-signature initialization from file storage failed, start with empty cache.' )

( eventid eq cache-init-success ) and ( object eq dns-signature ) and ( description contains 'dns-signature initialization from file storage successful.' )