- A
Define an authentication profile that includes an MFA method
The authentication profile defines the authentication method (e.g., MFA via OTP or SAML) and must be configured to provide the second factor.
- B
Configure a SAML identity provider
Why wrong: SAML is one way to provide MFA, but it is not required; other MFA methods like One-Time Password (OTP) can be used.
- C
Create an authentication policy rule that references the application
The authentication policy rule specifies the traffic that requires authentication, such as the application, and triggers the authentication challenge.
- D
Install the GlobalProtect client on user endpoints
Why wrong: GlobalProtect client is not required for MFA enforcement; users can authenticate via browser-based challenges.
- E
Enable SSL decryption on the firewall
Why wrong: SSL decryption is not required for MFA; it is used for inspecting encrypted traffic, not for authentication enforcement.
How to Enforce Multi-Factor Authentication for a Specific Application
This PCNSE practice question tests your understanding of securing users and applications with authentication. 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 company wants to enforce multi-factor authentication (MFA) for employees accessing a specific internal application through the firewall. Which two configurations are required on the Palo Alto Networks firewall? (Choose two.)
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
Define an authentication profile that includes an MFA method
Option A is correct because an authentication profile on a Palo Alto Networks firewall defines the authentication method(s) to be used, including MFA via RADIUS with one-time passwords (OTP), LDAP with OTP, or built-in MFA. This profile is then applied within an authentication policy rule to enforce MFA for specific traffic. Option C is correct because an authentication policy rule specifies the criteria (e.g., source zone, user, destination application) that triggers authentication, and it references the authentication profile containing the MFA method. Without this rule, the firewall would not know which traffic requires MFA.
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.
- ✓
Define an authentication profile that includes an MFA method
Why this is correct
The authentication profile defines the authentication method (e.g., MFA via OTP or SAML) and must be configured to provide the second factor.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure a SAML identity provider
Why it's wrong here
SAML is one way to provide MFA, but it is not required; other MFA methods like One-Time Password (OTP) can be used.
- ✓
Create an authentication policy rule that references the application
Why this is correct
The authentication policy rule specifies the traffic that requires authentication, such as the application, and triggers the authentication challenge.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Install the GlobalProtect client on user endpoints
Why it's wrong here
GlobalProtect client is not required for MFA enforcement; users can authenticate via browser-based challenges.
- ✗
Enable SSL decryption on the firewall
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse authentication policy rules with security policy rules, or assume that MFA always requires GlobalProtect or SAML, when in fact the firewall can enforce MFA directly via captive portal using an authentication profile and policy rule.
Detailed technical explanation
How to think about this question
Under the hood, the authentication policy rule uses a sequence of authentication enforcement actions (e.g., 'challenge' with MFA) and can be applied to HTTP/HTTPS traffic via the captive portal. The firewall intercepts the first request matching the rule, redirects the user to an authentication page, and after successful MFA, creates a session cookie for subsequent requests. In a real-world scenario, if the internal application uses a non-HTTP protocol, MFA would require a different approach (e.g., GlobalProtect with MFA), but for web-based apps, the authentication policy is sufficient.
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 junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
Quick reference
AAA Protocol Comparison
| Protocol | Port(s) | Encryption | Transport | Primary Use |
|---|---|---|---|---|
| RADIUS | 1812 / 1813 | Password only | UDP | Network access control |
| TACACS+ | 49 | Full packet | TCP | Device administration |
| Diameter | 3868 | Full session | TCP / SCTP | Carrier / mobile networks |
| 802.1X | — | EAP-based | Layer 2 | Port-based access control |
TACACS+ encrypts the entire packet; RADIUS only encrypts the password field — a key exam distinction.
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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Securing Users and Applications with Authentication — study guide chapter
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FAQ
Questions learners often ask
What does this PCNSE question test?
Securing Users and Applications with Authentication — This question tests Securing Users and Applications with Authentication — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Define an authentication profile that includes an MFA method — Option A is correct because an authentication profile on a Palo Alto Networks firewall defines the authentication method(s) to be used, including MFA via RADIUS with one-time passwords (OTP), LDAP with OTP, or built-in MFA. This profile is then applied within an authentication policy rule to enforce MFA for specific traffic. Option C is correct because an authentication policy rule specifies the criteria (e.g., source zone, user, destination application) that triggers authentication, and it references the authentication profile containing the MFA method. Without this rule, the firewall would not know which traffic requires MFA.
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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Last reviewed: Jul 4, 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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