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Palo Alto Networks NetSec-Pro Exam - Topic 4 Question 22 Discussion

Which action is only taken during slow path in the NGFW policy?
C) SSL/TLS decryption
A) Session lookup
B) Layer 2---Layer 4 firewall processing
D) Security policy lookup

Palo Alto Networks NetSec-Pro Exam - Topic 4 Question 22 Discussion

Actual exam question for Palo Alto Networks's NetSec-Pro exam
Question #: 22
Topic #: 4
[All NetSec-Pro Questions]

Which action is only taken during slow path in the NGFW policy?

Show Suggested Answer Hide Answer
Suggested Answer: C

In Palo Alto Networks' Single-Pass Parallel Processing (SP3) architecture, SSL/TLS decryption occurs only during the slow path when the firewall first encounters a new session.

''SSL/TLS decryption, which requires CPU-intensive cryptographic operations, is performed during the slow path when establishing new sessions. Once decrypted, traffic is processed in the fast path for subsequent packets.''

(Source: Packet Flow and SP3 Architecture)

After the initial decryption in the slow path, decrypted traffic is handled by fast path for efficiency.


by Jerry at Jun 27, 2026, 10:05 AM

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Emilio
1 day ago
D) Security policy lookup is also a possibility, but I lean towards C).
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Isadora
7 days ago
Wait, are you sure it's not B)? That seems off.
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Hana
12 days ago
Totally agree, it's all about the slow path for decryption!
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Ryan
17 days ago
I thought it was A) Session lookup.
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Serina
22 days ago
It's definitely C) SSL/TLS decryption.
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Nan
27 days ago
Layer 2 to Layer 4 processing seems like it could happen in the slow path, but I can't recall for sure.
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Jesusita
1 month ago
I practiced a question like this, and I feel like security policy lookup is done in both paths, but I could be wrong.
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Telma
1 month ago
I'm not entirely sure, but I remember something about session lookup being part of the fast path.
upvoted 0 times
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Rhea
1 month ago
I think the slow path is where more complex actions happen, so maybe it's C) SSL/TLS decryption?
upvoted 0 times
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