Exam NGFW-Engineer Topic 1 Question 65 Discussion

Actual exam question for Palo Alto Networks's NGFW-Engineer exam
Question #: 65
Topic #: 1

A large enterprise wants to implement certificate-based authentication for both users and devices, using an on- premises Microsoft Active Directory Certificate Services (AD CS) hierarchy as the primary certificate authority (CA). The enterprise also requires Online Certificate Status Protocol (OCSP) checks to ensure efficient revocation status updates and reduce the overhead on its NGFWs. The environment includes multiple Active Directory forests, Panorama management for several geographically dispersed firewalls, GlobalProtect portals and gateways needing distinct certificate profiles for users and devices, and strict Security policies demanding frequent revocation checks with minimal latency.
Which approach best addresses these requirements while maintaining consistent policy enforcement?

A. Deploy self-signed certificates at each site to simplify local certificate validation and reduce dependencies on a centralized CA. Turn off certificate revocation checks for lower overhead, rely on IP- based rules for GlobalProtect authentication, and use a single certificate profile for both users and devices. B. Distribute the root and intermediate CA certificates via Panorama as shared objects to ensure all firewalls have a consistent trust chain. Configure OCSP responder profiles on each firewall to offload revocation checks to an internal OCSP server while keeping CRL checks as a fallback. Maintain separate certificate profiles for user and device authentication and use an automated enrollment method
- such as Group Policy or SCEP - to deploy certificates to endpoints. C. Configure each firewall independently to trust the root and intermediate CA certificates. Rely only on manual CRL checks for certificate revocation, and import both user and device certificates directly into each firewall's local certificate store for authentication. D. Obtain wildcard certificates from a public CA for both user and device authentication, and configure firewalls to perform CRL polling at the default update interval. Manually install user certificates on endpoints and synchronize firewall certificate stores through frequent manual SSH updates to maintain consistency.

Suggested Answer: B Vote an answer

This approach best addresses the enterprise's requirements for certificate-based authentication, OCSP checks, and consistent policy enforcement:
Distributing the root and intermediate CA certificates via Panorama ensures that all firewalls in the enterprise are consistent in their trust chain and can validate certificates properly.
Configuring OCSP responder profiles on each firewall offloads the revocation checks to an internal OCSP server, which reduces the overhead on the firewalls and ensures fast, real-time certificate status checks.
Using CRL checks as a fallback ensures reliability in case the OCSP responder is unavailable.
Separate certificate profiles for users and devices ensure that the firewall can enforce different security policies based on the type of certificate (user vs. device).
Automated certificate enrollment methods such as Group Policy or SCEP streamline certificate distribution to endpoints, ensuring efficient management of certificates across geographically dispersed firewalls.

by Ansel at May 11, 2026, 12:17 PM

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