Quick Answer
The answer is srcip and dstport. These two log fields allow you to filter FortiAnalyzer logs by source IP and destination port with precision, directly matching the administrator’s need to isolate connections from 10.0.0.100 to external servers on TCP 443. The srcip field captures the originating internal address, while dstport specifies the exact destination port number, making them the correct pair for this granular traffic analysis. On the Fortinet NSE 7 Advanced Security NSE7 exam, this question tests your ability to navigate FortiAnalyzer’s log schema and apply field-based filters during incident investigation—a common scenario where candidates mistakenly choose the “service” field, which maps port to a service name but is less reliable for numeric port matching. A strong memory tip: think “source and destination” as a pair—srcip for where traffic starts, dstport for where it ends—and remember that “service” is a label, not a raw port number.
This NSE7 practice question tests your understanding of troubleshooting and diagnostics. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 needs to identify all connections from a specific internal IP (10.0.0.100) to external servers on TCP port 443 during the last hour. Which TWO log fields should be used to filter the logs? (Choose two.)
dstip
Why wrong: Destination IP is not specified in this query.
dstport
Correct. Destination port field filters by port number (443).
srcip
Correct. Source IP field is used to filter by internal IP.
action
Why wrong: Action (allow/deny) is not needed for this filter.
policyid
Why wrong: Policy ID is not needed for this specific filter.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
dstport
To filter traffic from a source IP and destination port, the administrator should use the source IP field and the destination port field. The service field may also show port but is less precise.
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.
dstip
Why it's wrong here
Destination IP is not specified in this query.
dstport
Why this is correct
Correct. Destination port field filters by port number (443).
Related concept
Static NAT maps one inside address to one outside address.
srcip
Why this is correct
Correct. Source IP field is used to filter by internal IP.
Related concept
Static NAT maps one inside address to one outside address.
action
Why it's wrong here
Action (allow/deny) is not needed for this filter.
policyid
Why it's wrong here
Policy ID is not needed for this specific filter.
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: dstport — To filter traffic from a source IP and destination port, the administrator should use the source IP field and the destination port field. The service field may also show port but is less precise.
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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