Question 650
A regional SOC analyst is asked to resolve this problem: An external appliance sends logs with a timestamp string that cannot be interpreted by the configured parser and time-window searches miss the incidents. What preventive practice should be standardized for this FortiAnalyzer workflow?
Explanation
Correct Answer
This safeguard directly addresses malformed timestamp in log parser: Retain representative parser fixtures and flag newly introduced unparseable timestamp patterns. The risk being prevented is: Incorrect parser time extraction can misplace otherwise ingested messages outside the investigator's selected event interval. A safeguard aimed at another fault would not control this issue.
Incorrect Answers
Receiving a connection is not equivalent to authorizing the device and assigning its logs to the expected administrative domain. “Review newly discovered devices and reconcile serial numbers against the approved branch onboarding register” would remedy that alternative situation, but it would not correct the present issue: incorrect parser time extraction can misplace otherwise ingested messages outside the investigator's selected event interval.
“Version and regression-test custom parsing rules whenever external products change their syslog schema” is the supported response when the collector can retain a message without automatically understanding every vendor-specific key or mapping it into expected normalized fields. Here the decisive response is “Retain representative parser fixtures and flag newly introduced unparseable timestamp patterns”, so that different intervention does not meet the stated requirement.
Network firewall events do not automatically include endpoint manager attributes when the required Fabric integration or feed is absent. “Recheck endpoint integration after EMS policy, connector or tenant permission changes” applies to that other condition. The reported evidence is an external appliance sends logs with a timestamp string that cannot be interpreted by the configured parser and time-window searches miss the incidents; this alternative would address the wrong dependency.