The answer is that you must configure a DLP sensor, enable SSL/TLS deep inspection on the firewall policy to inspect HTTPS, and apply the DLP sensor to that policy. This combination is necessary because credit card numbers sent via SMTP and HTTPS require the FortiGate to both decode the encrypted payload—achieved through proxy-based inspection with SSL deep inspection—and match the data pattern using a DLP sensor. On the Fortinet NSE 4 Network Security Professional NSE4 exam, this scenario tests your understanding of how DLP interacts with SSL inspection in a proxy-based environment; a common trap is forgetting that without SSL deep inspection, HTTPS traffic remains opaque and the DLP sensor cannot scan it. Remember the memory tip: “Sensor, SSL, and Apply” — you need the rule (sensor), the key (SSL inspection), and the lock (applying it to the policy) to catch data in transit.
NSE4 Security Profiles Practice Question
This NSE4 practice question tests your understanding of security profiles. 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.
An organization wants to implement data leak prevention (DLP) to detect when credit card numbers are sent via email (SMTP) and webmail (HTTPS). The FortiGate is using proxy-based inspection. Which THREE configurations are necessary? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a DLP sensor with a rule to match credit card patterns.
The correct answers are A, B, and C. DLP sensor, SSL inspection for HTTPS, and applying the sensor to the policy are all required.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Set the inspection mode to flow-based for better performance.
Why it's wrong here
Flow-based does not support DLP; proxy-based is required.
✗
Configure the antivirus profile to scan email attachments.
Why it's wrong here
Antivirus is for malware, not DLP.
✓
Create a DLP sensor with a rule to match credit card patterns.
Why this is correct
The DLP sensor defines what to detect.
Related concept
Static NAT maps one inside address to one outside address.
✓
Apply the DLP sensor to a firewall policy that handles SMTP and HTTPS traffic.
Why this is correct
The DLP sensor must be attached to a policy that matches the traffic.
Related concept
Static NAT maps one inside address to one outside address.
✓
Enable SSL/TLS deep inspection on the firewall policy to inspect HTTPS.
Why this is correct
Webmail over HTTPS requires decryption to inspect content.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related NSE4 NAT questions on configuration and troubleshooting.
Security Profiles — This question tests Security Profiles — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Create a DLP sensor with a rule to match credit card patterns. — The correct answers are A, B, and C. DLP sensor, SSL inspection for HTTPS, and applying the sensor to the policy are all required.
What should I do if I get this NSE4 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related NSE4 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which security profile type is used to prevent sensitive data such as credit card numbers from being sent out of the network via email or web traffic?
easy
A.Email filter profile
B.Antivirus profile
C.Web filter profile
✓ D.DLP profile
Why D: Option D is correct. Data Leak Prevention (DLP) profiles are designed to detect and block transmission of sensitive data based on patterns or predefined data types.
Last reviewed: Jun 21, 2026
Question Discussion
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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.
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