Question 40
A FortiAnalyzer administration handover records the following: A FortiAnalyzer forwards incident evidence to an external repository and must keep the underlying local archive for the defined retention period. Which ongoing safeguard best addresses the original risk?
Explanation
Correct Answer
Audit forwarding delivery and local archive retention as separate controls. This long-term control addresses the recurring risk. The technical reason is: FortiAnalyzer forwarding retains a local copy by default; local retention is governed by archive storage policy rather than export alone. A later acceptance test still needs to confirm: The downstream repository receives a sampled event and the FortiAnalyzer copy remains according to the retention rule.
Incorrect Answers
This safeguard, “Review ADOM assignment and administrator scope during mergers and new-device onboarding”, reduces a different source-defined risk: Three subsidiaries share one FortiAnalyzer but analysts accidentally see each other's logs because every firewall was assigned to one common administrative domain. That risk depends on: ADOMs provide separate administrative contexts for managed devices and log analysis, so assignment affects which data and resources analysts see. The recurring problem here is a FortiAnalyzer forwards incident evidence to an external repository and must keep the underlying local archive for the defined retention period. The originally selected control “Audit forwarding delivery and local archive retention as separate controls” is more specific because FortiAnalyzer forwarding retains a local copy by default; local retention is governed by archive storage policy rather than export alone.
This safeguard, “Review device-volume baselines and quota thresholds after major firewall traffic changes”, reduces a different source-defined risk: A large FortiAnalyzer deployment drops late-day log collection after one source device exceeds its configured quota although overall disk still has free capacity. That risk depends on: Log admission and retention can be constrained by per-device or per-ADOM quotas independent of aggregate disk free space. The recurring problem here is a FortiAnalyzer forwards incident evidence to an external repository and must keep the underlying local archive for the defined retention period. The originally selected control “Audit forwarding delivery and local archive retention as separate controls” is more specific because FortiAnalyzer forwarding retains a local copy by default; local retention is governed by archive storage policy rather than export alone.
This safeguard, “Validate VDOM identifiers and access scopes after virtual-domain redesign”, reduces a different source-defined risk: A FortiGate with multiple VDOMs sends messages, but an analyst cannot distinguish which tenant produced a particular security event. That risk depends on: Device serial alone may not identify a VDOM-specific policy context; source and virtual domain metadata affect analysis. The recurring problem here is a FortiAnalyzer forwards incident evidence to an external repository and must keep the underlying local archive for the defined retention period. The originally selected control “Audit forwarding delivery and local archive retention as separate controls” is more specific because FortiAnalyzer forwarding retains a local copy by default; local retention is governed by archive storage policy rather than export alone.