The answer is that the "initial contact received" message indicates the remote peer has restarted and cleared its security associations. This notification is sent by an IPsec VPN peer when it has deleted all its Phase 1 and Phase 2 SAs, typically due to a reboot or a configuration reload, forcing the other side to re-establish the tunnel from scratch. On the Fortinet NSE 4 Network Security Professional exam, this message tests your ability to distinguish between informational IKE notifications and actual errors—a common trap is misreading it as a failure, when it is simply a notice that the remote peer has reset its state. Remember that "initial contact" is the VPN equivalent of a handshake reset, not a handshake rejection. A useful memory tip: think of it as the remote peer saying "I just rebooted, so let's start over," which helps you avoid wasting time troubleshooting a non-issue.
NSE4 Authentication and VPN Practice Question
This NSE4 practice question tests your understanding of authentication and vpn. 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.
An administrator is troubleshooting an IPsec VPN that fails to establish. The 'diagnose vpn ike log' shows 'initial contact received'. What does this message indicate?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The remote peer has restarted and cleared its security associations
'Initial contact' is a notification sent when a peer clears its Phase 1 and Phase 2 SAs. It typically indicates that the remote peer has restarted or its configuration has been reloaded. It is not an error but an informational message.
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.
✗
The pre-shared key is incorrect
Why it's wrong here
Incorrect PSK would result in authentication failure.
✗
The Phase 1 proposal is mismatched
Why it's wrong here
Proposal mismatch would cause NO_PROPOSAL_CHOSEN.
✓
The remote peer has restarted and cleared its security associations
Why this is correct
'Initial contact' notifies the local peer to delete old SAs and re-establish the tunnel.
Related concept
Read the scenario before looking for a memorised answer.
✗
A network address translation device is altering the IKE packets
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.
Trap categories for this question
Command / output trap
NAT traversal would show NAT detection payloads.
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.
Authentication and VPN — This question tests Authentication and VPN — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The remote peer has restarted and cleared its security associations — 'Initial contact' is a notification sent when a peer clears its Phase 1 and Phase 2 SAs. It typically indicates that the remote peer has restarted or its configuration has been reloaded. It is not an error but an informational message.
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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Question Discussion
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