PCNSE Decryption and SSL Inspection Practice Question
This PCNSE practice question tests your understanding of decryption and ssl inspection. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A Palo Alto Networks firewall is configured for SSL Forward Proxy decryption. The security team wants to ensure that decrypted traffic is also inspected by an external DLP appliance. How should this be achieved?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a Decryption Policy to decrypt traffic and then use a Decryption Forwarding service to forward decrypted traffic to the DLP appliance.
Option B is correct because the Palo Alto Networks firewall can be configured with a Decryption Forwarding service, which allows decrypted traffic to be forwarded to an external DLP appliance for additional inspection. This is achieved by defining a Decryption Forwarding profile that specifies the DLP appliance as the destination, ensuring that traffic decrypted by the SSL Forward Proxy is sent in clear text to the DLP appliance for content inspection.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Configure the DLP appliance to decrypt traffic itself.
Why it's wrong here
DLP appliances typically receive decrypted traffic from the firewall.
✓
Configure a Decryption Policy to decrypt traffic and then use a Decryption Forwarding service to forward decrypted traffic to the DLP appliance.
Why this is correct
This is the correct method using Decryption Forwarding feature.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure the firewall to re-encrypt traffic before sending to DLP.
Why it's wrong here
DLP needs decrypted traffic for inspection.
✗
Add a decryption policy on the firewall to exclude traffic to the DLP appliance.
Why it's wrong here
That would bypass decryption for DLP traffic, not help.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think re-encrypting traffic (Option C) is necessary for security, but the correct approach is to forward decrypted traffic in clear text to the DLP appliance, as re-encryption would require the DLP to decrypt again, defeating the purpose of the inspection.
Detailed technical explanation
How to think about this question
The Decryption Forwarding feature in PAN-OS allows the firewall to forward decrypted traffic to an external device (like a DLP appliance) by specifying the destination IP and port in a Decryption Forwarding profile. This is typically used in environments where the firewall handles SSL decryption but additional content inspection (e.g., data loss prevention) is required, and the decrypted traffic is sent over a dedicated interface or VLAN to ensure security. A common real-world scenario is forwarding decrypted traffic to a DLP appliance for scanning sensitive data like credit card numbers or PII, while the firewall continues to enforce security policies on the same traffic.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Decryption and SSL Inspection — This question tests Decryption and SSL Inspection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a Decryption Policy to decrypt traffic and then use a Decryption Forwarding service to forward decrypted traffic to the DLP appliance. — Option B is correct because the Palo Alto Networks firewall can be configured with a Decryption Forwarding service, which allows decrypted traffic to be forwarded to an external DLP appliance for additional inspection. This is achieved by defining a Decryption Forwarding profile that specifies the DLP appliance as the destination, ensuring that traffic decrypted by the SSL Forward Proxy is sent in clear text to the DLP appliance for content inspection.
What should I do if I get this PCNSE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This PCNSE practice question is part of Courseiva's free Palo Alto Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCNSE exam.
Question Discussion
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