Question 140
A regional SOC analyst is asked to resolve this problem: A branch log archive rotates rapidly during a traffic storm and analysts mistake the larger number of smaller files for missing events. What preventive practice should be standardized for this FortiAnalyzer workflow?
Explanation
Correct Answer
This safeguard directly addresses log file rollover during a collection peak: Check rotation policy and archival capacity under realistic peak logging loads. The risk being prevented is: Log file rollover behavior is distinct from event loss and must be evaluated against retained sequence and archive coverage. A safeguard aimed at another fault would not control this issue.
Incorrect Answers
Hostname changes do not necessarily change underlying device serial identity but can make name-only searches incomplete. “Keep a device rename history and favor immutable identifiers in incident correlation and evidence export” would remedy that alternative situation, but it would not correct the present issue: log file rollover behavior is distinct from event loss and must be evaluated against retained sequence and archive coverage.
“Inspect transport security during branch onboarding and after certificates or firmware change” is the supported response when destination configuration alone does not prove negotiated transport security or trusted endpoint identity. Here the decisive response is “Check rotation policy and archival capacity under realistic peak logging loads”, so that different intervention does not meet the stated requirement.
ADOM separation restricts the inventory and data scope used by analytics and incident workflows by design. “Treat tenant isolation as a control, not a failure to fix by granting unrestricted global administrator access” applies to that other condition. The reported evidence is a branch log archive rotates rapidly during a traffic storm and analysts mistake the larger number of smaller files for missing events; this alternative would address the wrong dependency.