Question 870
A regional SOC analyst is asked to resolve this problem: A FortiGate records a flood-related anomaly toward a published service while the service team reports no customer-visible outage. What should the analyst or engineer change first to address this condition?
Explanation
Correct Answer
The underlying cause is: A DoS or anomaly detection is not by itself evidence that the protected application became unavailable. The correct response is: Inspect the detected rate, protective action and independent service availability measurements over the same interval. Confirm by checking: The report separately records the attack attempt, firewall mitigation and actual customer impact.
Incorrect Answers
That intervention addresses failed web requests caused by certificate error, where Connection failure and security detection are different causes; a missing malware log cannot identify a TLS or certificate root cause. Here, the relevant failure is instead: A DoS or anomaly detection is not by itself evidence that the protected application became unavailable.
That intervention addresses dns and web filter indicator disagreement, where Different hostnames or cached endpoints can share an IP and different security profiles evaluate different request fields. In this question the necessary remedy is “Inspect the detected rate, protective action and independent service availability measurements over the same interval”, which this alternative does not provide.
That intervention addresses application category shadow it investigation, where Generic HTTPS totals obscure application categories that may reveal unsanctioned file-sharing services. The observed condition is a FortiGate records a flood-related anomaly toward a published service while the service team reports no customer-visible outage; this mechanism addresses another problem.