Quick Answer
The answer is SSL Forward Proxy, SSH Proxy, and SSL Inbound Inspection. These three are the valid SSL/TLS decryption methods on Palo Alto Networks firewalls because they enable the firewall to intercept and inspect encrypted traffic in different deployment scenarios. SSL Forward Proxy decrypts outbound client traffic by acting as a trusted intermediary, while SSL Inbound Inspection decrypts inbound traffic destined for protected servers, and SSH Proxy decrypts SSH tunnels to inspect encapsulated content. On the PCNSA exam, this question tests your understanding of the decryption feature set and often includes a trap where candidates mistakenly select SSL Decryption Exclusions or Decryption Profile, which are policy components, not methods. A reliable memory tip is to remember the three “P”s: Proxy for outbound, Inbound for servers, and SSH for tunnels—each method corresponds to a specific traffic direction or protocol type.
This PCNSA practice question tests your understanding of securing traffic. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which THREE are valid methods to decrypt SSL/TLS traffic on a Palo Alto Networks firewall? (Choose three.)
IPsec Decryption
Why wrong: IPsec is for VPN tunnels, not SSL/TLS.
SSH Proxy
Decrypts SSH traffic for inspection.
SSL Inbound Inspection
Decrypts inbound traffic destined to servers whose private key is imported.
Decryption Mirror
Why wrong: Decryption Mirror is not a decryption method; it's a monitoring feature.
SSL Forward Proxy
Decrypts outbound traffic using a forward proxy certificate.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
SSH Proxy
SSH Proxy is a valid method for decrypting SSL/TLS traffic on a Palo Alto Networks firewall because it allows the firewall to act as a man-in-the-middle for SSH connections, decrypting the SSH tunnel to inspect the encapsulated traffic. This is distinct from SSL/TLS decryption but is grouped under the same decryption feature set for inspecting encrypted protocols.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
IPsec Decryption
SSH Proxy
Why this is correct
Decrypts SSH traffic for inspection.
Related concept
Read the scenario before looking for a memorised answer.
SSL Inbound Inspection
Why this is correct
Decrypts inbound traffic destined to servers whose private key is imported.
Related concept
Read the scenario before looking for a memorised answer.
Decryption Mirror
Why it's wrong here
Decryption Mirror is not a decryption method; it's a monitoring feature.
SSL Forward Proxy
Why this is correct
Decrypts outbound traffic using a forward proxy certificate.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates may confuse Decryption Mirror (a monitoring tool) with a decryption method, or mistakenly think IPsec Decryption applies to SSL/TLS, when in fact IPsec operates at a different layer and is not used for SSL/TLS traffic inspection.
Detailed technical explanation
SSL Forward Proxy decrypts outbound traffic from internal clients to external servers by generating a certificate on-the-fly signed by a trusted CA, while SSL Inbound Inspection decrypts inbound traffic to protected servers using the server's private key. Both methods rely on the firewall's ability to re-encrypt traffic after inspection, ensuring end-to-end encryption is maintained from the client's perspective.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the PCNSA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Securing Traffic — study guide chapter
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FAQ
Securing Traffic — This question tests Securing Traffic — Read the scenario before looking for a memorised answer..
The correct answer is: SSH Proxy — SSH Proxy is a valid method for decrypting SSL/TLS traffic on a Palo Alto Networks firewall because it allows the firewall to act as a man-in-the-middle for SSH connections, decrypting the SSH tunnel to inspect the encapsulated traffic. This is distinct from SSL/TLS decryption but is grouped under the same decryption feature set for inspecting encrypted protocols.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This PCNSA 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 PCNSA exam.
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