The correct actions are to verify the web filter profile is applied to the policy and to check if SSL deep inspection is enabled. Without SSL deep inspection, the FortiGate cannot inspect the hostnames within encrypted HTTPS traffic, allowing users to bypass the web filter and access prohibited categories even when the profile is correctly applied. On the Fortinet NSE 4 exam, this question tests your understanding that web filtering relies on visibility into the full URL, not just the IP address, and a common trap is assuming the profile alone is sufficient. To troubleshoot web filter bypass, always confirm that the firewall policy includes both the web filter profile and a valid SSL inspection profile—otherwise, encrypted traffic slips through unseen. Memory tip: “No SSL, no URL—filtering is blind.”
NSE4 Security Profiles Practice Question
This NSE4 practice question tests your understanding of security profiles. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 FortiGate administrator notices that some users can bypass the web filter to access prohibited categories. The web filter profile is applied to the firewall policy. Which TWO actions should the admin take to determine why the filter is being bypassed? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Check if the firewall policy that the traffic matches has the web filter profile applied
Options A and D are correct. Verifying that the web filter profile is correctly applied to the policy is fundamental. Checking if HTTPS traffic is being inspected is critical because without SSL deep inspection, web filter cannot see the hostnames in encrypted traffic. Options B and C are not directly relevant; option E is about client-side, not the cause.
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.
✗
Ensure that the FortiGate has connectivity to FortiGuard
Why it's wrong here
Without FortiGuard, web filter may not work, but the question implies bypass, not lack of categorization.
✓
Check if the firewall policy that the traffic matches has the web filter profile applied
Why this is correct
If the policy does not have the profile, it will not be filtered.
Related concept
Read the scenario before looking for a memorised answer.
✗
Verify that the DNS filter is also applied to the same policy
Why it's wrong here
DNS filter is separate; web filter can work without it.
✓
Check if SSL deep inspection is enabled on the policy
Why this is correct
Without SSL deep inspection, web filter cannot inspect HTTPS traffic's URL, so it may pass unchecked.
Related concept
Read the scenario before looking for a memorised answer.
✗
Examine the client's browser proxy settings
Why it's wrong here
Client-side settings do not affect FortiGate's filtering if traffic goes through.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 practitioner preparing for the NSE4 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Security Profiles — This question tests Security Profiles — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Check if the firewall policy that the traffic matches has the web filter profile applied — Options A and D are correct. Verifying that the web filter profile is correctly applied to the policy is fundamental. Checking if HTTPS traffic is being inspected is critical because without SSL deep inspection, web filter cannot see the hostnames in encrypted traffic. Options B and C are not directly relevant; option E is about client-side, not the cause.
What should I do if I get this NSE4 question wrong?
Identify which NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This NSE4 practice question is part of Courseiva's free Fortinet 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 NSE4 exam.
Question Discussion
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