PCNSE Decryption and SSL Inspection Practice Question
Which best practice should be followed for certificate management when deploying SSL Forward Proxy decryption in a large enterprise?
⚠ Common exam trap
Palo Alto Networks often tests the misconception that a public CA certificate can be used directly for re-encryption, but the trap here is that the firewall must generate certificates on-the-fly, requiring an internal CA to sign them, not a public CA certificate that would expose the private key.
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
✓
Use an internal certificate authority (CA) and distribute the CA certificate to all clients via Group Policy.
Using an internal CA and distributing its certificate via Group Policy ensures that all clients trust the decryption certificate used by the firewall to re-encrypt traffic. This avoids certificate warnings and allows seamless SSL Forward Proxy decryption. It also enables centralized management and revocation, which is critical for large enterprise deployments.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use an internal certificate authority (CA) and distribute the CA certificate to all clients via Group Policy.
Why this is correct
Standard best practice for enterprise environments.
- ✗
Use a self-signed certificate and manually install it on each client.
Why it's wrong here
Not scalable for large enterprises.
- ✗
Use a wildcard certificate from a public CA to simplify deployment.
Why it's wrong here
Wildcard certificates are not recommended for decryption due to security concerns.
- ✗
Use a certificate from a public CA that is already trusted by clients.
Why it's wrong here
Firewall would need the private key, which is usually not available for public CAs.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.