Quick Answer
The correct fields are policyid and srcintf. In FortiAnalyzer logs, the policyid field directly corresponds to the specific firewall policy that processed the traffic, while srcintf identifies the source interface where that policy was applied, which is essential because the same policy ID can behave differently depending on the incoming interface. On the Fortinet NSE 7 Advanced Security NSE7 exam, this question tests your understanding of log field mapping and incident investigation workflows—a common trap is selecting destination IP or user name, which are not tied to the policy match. Remember that filtering by policyid alone may return ambiguous results if policies share IDs across VDOMs, so always pair it with srcintf to isolate the exact policy instance. Memory tip: think “Policy + Port” to recall that policyid and srcintf work together like a lock and key for log filtering.
This NSE7 practice question tests your understanding of troubleshooting and diagnostics. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 administrator is investigating a security incident using FortiAnalyzer logs. The admin wants to identify all traffic that matched a specific firewall policy. Which TWO log fields should the admin use to filter the logs?
policyid
The policy ID directly identifies the firewall policy that processed the traffic.
user
Why wrong: User field identifies the user, not the policy.
appid
Why wrong: Application ID identifies the application, not the policy.
dstip
Why wrong: Destination IP can match multiple policies; not specific to a single policy.
srcintf
The source interface is part of the policy match criteria, helping to narrow down which policy was triggered.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
policyid
In FortiAnalyzer logs, the policy ID (usually 'policyid' or 'policy_id') and source interface (e.g., 'srcintf') are key fields to identify which firewall policy matched the traffic. Other fields like destination IP or user name are not directly tied to the policy ID.
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
For each option: why learners choose it and why it is or isn't the right answer here.
policyid
user
Why it's wrong here
User field identifies the user, not the policy.
appid
Why it's wrong here
Application ID identifies the application, not the policy.
dstip
Why it's wrong here
Destination IP can match multiple policies; not specific to a single policy.
srcintf
Why this is correct
The source interface is part of the policy match criteria, helping to narrow down which policy was triggered.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
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
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.
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
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
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 NSE7 NAT questions on configuration and troubleshooting.
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FAQ
Troubleshooting and Diagnostics — This question tests Troubleshooting and Diagnostics — Static NAT maps one inside address to one outside address..
The correct answer is: policyid — In FortiAnalyzer logs, the policy ID (usually 'policyid' or 'policy_id') and source interface (e.g., 'srcintf') are key fields to identify which firewall policy matched the traffic. Other fields like destination IP or user name are not directly tied to the policy ID.
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 NSE7 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 21, 2026
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