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Palo Alto Networks NetSec-Pro Exam - Topic 5 Question 12 Discussion

Actual exam question for Palo Alto Networks's NetSec-Pro exam
Question #: 12
Topic #: 5
[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 Rebbeca at Nov 20, 2025, 07:00 PM

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Dong
1 day ago
B is also important, but not just for slow path.
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Rebecka
6 days ago
Wait, really? I didn't know that!
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Shayne
12 days ago
Totally agree, C is the right answer!
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Daryl
17 days ago
I thought it was A) Session lookup?
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Shaniqua
22 days ago
It's definitely C) SSL/TLS decryption.
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Valda
27 days ago
B) Layer 2---Layer 4 firewall processing? More like Layer 2---Layer 4 snooze-fest, am I right?
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Janet
1 month ago
D) Security policy lookup sounds like the right answer to me. That's the only one that makes sense in the context of an NGFW policy.
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Bulah
1 month ago
Hmm, I'm pretty sure the slow path is where they make you do the hokey-pokey before they let you through.
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Queen
1 month ago
I always get confused between the slow path and the fast path. Is the slow path where they serve you coffee and donuts while you wait?
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Willis
2 months ago
C) SSL/TLS decryption is the correct answer. That's the only action that's performed during the slow path.
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Esteban
2 months ago
I'm not sure, but I think the key is understanding what activities are unique to the slow path versus the fast path in the NGFW. I'll work through that logically.
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Kimberely
2 months ago
I'm pretty confident on this one. I remember the slow path is where more intensive processing like SSL/TLS decryption happens, so that's got to be the answer.
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Alease
2 months ago
Okay, I've got a strategy for this. I'll eliminate the options that are part of both slow and fast path, then focus on identifying the one that's only in slow path.
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Leila
2 months ago
I have a vague recollection that security policy lookup happens in both paths, but I can't remember the specifics.
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Hana
2 months ago
I think the answer might be C) SSL/TLS decryption, but I'm not entirely sure if that's only done in the slow path.
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Myra
3 months ago
I feel like Layer 2 to Layer 4 processing is more about the fast path, but I could be mixing it up with another topic.
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Giuseppe
3 months ago
I remember practicing a question similar to this, and I think session lookup is part of the fast path, so that might help narrow it down.
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Jolanda
3 months ago
Hmm, I'm a bit confused on the distinction between the firewall processing and the security policy lookup. I'll need to review my notes on NGFW architecture.
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Estrella
3 months ago
This one seems tricky. I'll need to think carefully about the differences between slow path and fast path processing in the NGFW.
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