When is the content inspection performed in the packet flow process?

The correct answer is A. after the application has been identified. In the Palo Alto Networks packet flow architecture, content inspection (performed by the security profiles such as Antivirus, Vulnerability Protection, Anti-Spyware, etc.) occurs after the application has been identified by App-ID. This ordering is by design: the firewall must…

Submitted by helene.fr· Apr 18, 2026Securing Traffic

Question

Options

Aafter the application has been identified
Bafter the SSL Proxy re-encrypts the packet
Cbefore the packet forwarding process
Dbefore session lookup

How the community answered

(43 responses)

A
93% (40)
B
2% (1)
C
5% (2)

Explanation

In the Palo Alto Networks packet flow architecture, content inspection (performed by the security profiles such as Antivirus, Vulnerability Protection, Anti-Spyware, etc.) occurs after the application has been identified by App-ID. This ordering is by design: the firewall must first classify the application using App-ID before it can apply the appropriate decoder and content inspection engine for that specific application protocol. Inspecting content before application identification would be inefficient and inaccurate, as the correct protocol decoder would not yet be selected. Session lookup and forwarding decisions happen earlier in the flow, before App-ID and content inspection.

Topics

#Packet Flow#Content Inspection#App-ID#Security Processing

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