It's C.
C = not-applicable = Port not allowed by the Security Policy:
because the Session End Reason is policy-deny.
B = incomplete = No date packets seen subsequent to session initiation:
B would've been the correct answer if the Session End Reason was aged-out.
I would say C. Traffic didnt match any other policies and so landed at the implicit "deny all" policy. If it's deny all, the traffic was dropped before the application could be determined.
https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClibCAC
I would say the right option is C: Not-applicable means that the Palo Alto device has received data that will be discarded because the port or service that the traffic is coming in on is not allowed, or there is no rule or policy allowing that port or service
From this article:
Incomplete means that either the three-way TCP handshake did not complete OR the three-way TCP handshake did complete but there was no enough data after the handshake to identify the application.
Insufficient data means not enough data to identify the application.
Unknown-tcp means the firewall captured the three-way TCP handshake, but the application was not identified.
Not-applicable means that the Palo Alto device has received data that will be discarded because the port or service that the traffic is coming in on is not allowed, or there is no rule or policy allowing that port or service.
The answer is C- Not-applicable.
upvoted 2 times
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