NSE7 Enterprise Firewall and VDOMs Practice Question
An administrator runs the following command on a FortiGate: 'diagnose sys session filter dport 443' and sees output: proto=6 proto_state=01 duration=3600 expire=3599 What does this indicate about the session?
⚠ Common exam trap
Test-takers frequently confuse the 'duration' and 'expire' values or assume 'proto=6' and a long duration imply an established session, but FortiGate's 'proto_state' field is the key to identifying the TCP handshake phase.
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
✓
The session is fully established and has been active for 1 hour
The output shows proto=6 (TCP) and proto_state=01, which in FortiGate's session table corresponds to TCP state ESTABLISHED. The duration=3600 indicates the session has existed for 3600 seconds (1 hour), and expire=3599 shows it will expire in 3599 seconds. This confirms the session is fully established, making option A correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The session is fully established and has been active for 1 hour
Why this is correct
Correct because proto_state=01 indicates TCP ESTABLISHED, and duration=3600 seconds confirms it has been active for 1 hour.
- ✗
The session will expire in 3600 seconds and has been active for 3599 seconds
Why it's wrong here
The values are swapped: duration=3600, expire=3599.
- ✗
The session is in a TCP SYN-SENT state and has not completed the three-way handshake
Why it's wrong here
Incorrect because proto_state=01 corresponds to TCP ESTABLISHED, not SYN-SENT. The session has completed the three-way handshake.
- ✗
The session is using UDP on port 443
Why it's wrong here
Protocol 6 is TCP, not UDP. UDP is protocol 17.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This NSE7 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 NSE7 exam.