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PCNSA Practice Question: Create a rule that allows internal users to…
An administrator needs to create a rule that allows internal users to access a public web server hosted in the DMZ. The firewall is in layer 3 mode. Which rule configuration is correct for this scenario?
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
✓
Source zone: trust, Destination zone: DMZ, Application: web-browsing, Action: allow
The correct rule configuration is Option C: Source zone: trust, Destination zone: DMZ, Application: web-browsing, Action: allow. This allows internal users (trust zone) to access the public web server in the DMZ. Option A is wrong because the source zone should be trust, not DMZ. Option B is wrong because specifying Service: any and Application: any is too broad and not best practice. Option D is wrong because the destination zone should be DMZ, not trust.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Source zone: DMZ, Destination zone: trust, Application: web-browsing, Action: allow
Why it's wrong here
This would allow traffic from DMZ to trust, which is opposite direction.
- ✗
Source zone: trust, Destination zone: DMZ, Service: any, Application: any, Action: allow
Why it's wrong here
Using service 'any' and application 'any' is overly permissive and not best practice.
- ✓
Source zone: trust, Destination zone: DMZ, Application: web-browsing, Action: allow
Why this is correct
This correctly permits internal users to access the DMZ web server using web-browsing application.
- ✗
Source zone: trust, Destination zone: trust, Application: web-browsing, Action: allow
Why it's wrong here
Both zones should not be the same for this scenario; DMZ is the destination.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.