Question 290
A regional SOC analyst is asked to resolve this problem: An investigator concludes policy 27 caused an event today using the current firewall rule list, although administrators reordered policies yesterday. What should the analyst or engineer change first to address this condition?
Explanation
Correct Answer
The underlying cause is: Policy identifiers and configuration context must be interpreted against the configuration effective when the event was logged. The correct response is: Confirm the historical policy identity and change timestamp before attributing a saved traffic event to the current rule text. Confirm by checking: A configuration audit aligns the event's policy field with the correct policy revision at the incident time.
Incorrect Answers
That intervention addresses top destination anomaly with cdn, where A shared CDN endpoint can serve many unrelated legitimate web services, so destination frequency alone cannot establish malicious purpose. Here, the relevant failure is instead: Policy identifiers and configuration context must be interpreted against the configuration effective when the event was logged.
That intervention addresses drilling from summary into log detail, where Aggregated visual summaries omit some record-level fields needed to explain the exact policy decision. In this question the necessary remedy is “Confirm the historical policy identity and change timestamp before attributing a saved traffic event to the current rule text”, which this alternative does not provide.
That intervention addresses denied traffic action interpretation, where A denied traffic action records a blocked attempt rather than confirmation of successful permitted access or compromise. The observed condition is an investigator concludes policy 27 caused an event today using the current firewall rule list, although administrators reordered policies yesterday; this mechanism addresses another problem.