Question 10
An IPS event shows a signature match with action pass, but the incident report claims the FortiGate blocked a real exploit despite the lack of a block event. Which observable result BEST demonstrates that the intended FortiGate security or connectivity requirement is satisfied?
Explanation
Correct Answer
The targeted false positive no longer interrupts an approved service, while exploit attempts retain blocking coverage and traceable alerts. This is the operational validation outcome rather than merely an enabled setting. An IPS exemption by broad source subnet or application category may remove protection beyond one false positive; signature updates can change what matches. Scenario: An IPS event shows a signature match with action pass, but the incident report claims the FortiGate blocked a real exploit despite the lack of a block event.
Incorrect Answers
Known harmless test signatures trigger the expected controlled action and SOC operators can trace detection to file, user, policy and update state. This result would test FortiGuard antivirus signature freshness and incident response but does not demonstrate the desired FortiGate outcome here. Verify instead: The targeted false positive no longer interrupts an approved service, while exploit attempts retain blocking coverage and traceable alerts. Scenario: An IPS event shows a signature match with action pass, but the incident report claims the FortiGate blocked a real exploit despite the lack of a block event.
A controlled benign exploit simulation triggers the expected IPS action while legitimate application transactions continue under tested exclusions. This result would test IPS signature filters, severity and policy actions but does not demonstrate the desired FortiGate outcome here. Verify instead: The targeted false positive no longer interrupts an approved service, while exploit attempts retain blocking coverage and traceable alerts. Scenario: An IPS event shows a signature match with action pass, but the incident report claims the FortiGate blocked a real exploit despite the lack of a block event.
The desired category or hostname restriction is enforced where supported and any path-based policy explicitly requires appropriate decrypting inspection. This result would test HTTPS web filtering hostname limitations and logging but does not demonstrate the desired FortiGate outcome here. Verify instead: The targeted false positive no longer interrupts an approved service, while exploit attempts retain blocking coverage and traceable alerts. Scenario: An IPS event shows a signature match with action pass, but the incident report claims the FortiGate blocked a real exploit despite the lack of a block event.