- A
SSL Forward Proxy decryption can only be applied to traffic destined for TCP port 443.
Why wrong: It can be applied to other ports as well, though 443 is default.
- B
Decryption policy rules can match on source zone, source user, destination IP, URL category, and service.
These are common match criteria for decryption policy rules.
- C
The firewall must generate a certificate on-the-fly signed by a trusted CA for each decrypted session.
This is correct; the firewall acts as a man-in-the-middle and creates a certificate signed by the enterprise CA.
- D
An 'ssl-decrypt' action in a decryption rule requires that the associated decryption profile includes a certificate for the firewall to use.
Why wrong: The certificate is configured in the Decryption Profile, but the 'ssl-decrypt' action does not require it; the profile must have a certificate for forward proxy, but it's not the action that requires it.
- E
The firewall can inspect the Server Name Indication (SNI) field in the ClientHello to determine the destination hostname.
SNI is used for policy matching when decryption is not possible or not required.
PCNSE Decryption and SSL Inspection Practice Question
This PCNSE practice question tests your understanding of decryption and ssl inspection. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 statements are true regarding SSL Forward Proxy decryption on Palo Alto Networks firewalls?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Decryption policy rules can match on source zone, source user, destination IP, URL category, and service.
Option B is correct because Palo Alto Networks decryption policy rules can match on a wide range of criteria including source zone, source user, destination IP, URL category, and service. This granularity allows administrators to selectively decrypt traffic based on business needs and security policies, not just basic IP/port matching.
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.
- ✗
SSL Forward Proxy decryption can only be applied to traffic destined for TCP port 443.
Why it's wrong here
It can be applied to other ports as well, though 443 is default.
- ✓
Decryption policy rules can match on source zone, source user, destination IP, URL category, and service.
Why this is correct
These are common match criteria for decryption policy rules.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
The firewall must generate a certificate on-the-fly signed by a trusted CA for each decrypted session.
Why this is correct
This is correct; the firewall acts as a man-in-the-middle and creates a certificate signed by the enterprise CA.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
An 'ssl-decrypt' action in a decryption rule requires that the associated decryption profile includes a certificate for the firewall to use.
Why it's wrong here
The certificate is configured in the Decryption Profile, but the 'ssl-decrypt' action does not require it; the profile must have a certificate for forward proxy, but it's not the action that requires it.
- ✓
The firewall can inspect the Server Name Indication (SNI) field in the ClientHello to determine the destination hostname.
Why this is correct
SNI is used for policy matching when decryption is not possible or not required.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume SSL Forward Proxy decryption is limited to port 443, but Palo Alto firewalls can decrypt SSL/TLS on any TCP port by inspecting the handshake, and they also mistakenly think the decryption profile must contain a certificate for the firewall, when in fact the CA certificate is configured separately and the firewall generates session-specific certificates automatically.
Detailed technical explanation
How to think about this question
The firewall intercepts the ClientHello message and extracts the Server Name Indication (SNI) field to identify the destination hostname, then dynamically generates a certificate signed by the configured CA to impersonate the server. This allows the firewall to decrypt traffic even when the destination IP does not match the certificate's Common Name (CN) or Subject Alternative Names (SANs). The decryption policy is evaluated before the SSL handshake completes, enabling selective decryption based on Layer 7 attributes like URL category.
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.
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FAQ
Questions learners often ask
What does this PCNSE question test?
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: Decryption policy rules can match on source zone, source user, destination IP, URL category, and service. — Option B is correct because Palo Alto Networks decryption policy rules can match on a wide range of criteria including source zone, source user, destination IP, URL category, and service. This granularity allows administrators to selectively decrypt traffic based on business needs and security policies, not just basic IP/port matching.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 11, 2026
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.
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