Question 280
During a post-incident review at a research campus, the original problem was: An application allow rule has Security Profiles attached but is disabled during a change; operations assumes profiles still permit traffic. Which preventive practice most directly addresses its cause?
Explanation
Correct Answer
Include enabled-state and target-scope checks in rule readiness signoff. This control reduces recurrence of the documented mechanism: An inactive Security rule cannot enforce its attachments or authorize applications. It creates a repeatable check around the needed response: Enable the reviewed matching rule and verify policy order and deployed state, or rely on a correct existing permit.
Incorrect Answers
Integrate firewall identity map invalidation with privileged account termination. That safeguard addresses another potential failure: A user group rule is unexpectedly hit by a former employee whose cached identity mapping has not expired after offboarding. It is not the most targeted recurring control for the described cause: An inactive Security rule cannot enforce its attachments or authorize applications.
Add profile checks to privileged application rule approvals. That safeguard addresses another potential failure: A policy permits a documented remote administration application but lacks the required anti-spyware profile despite explicit endpoint-control policy. It is not the most targeted recurring control for the described cause: An inactive Security rule cannot enforce its attachments or authorize applications.
Monitor User-ID mapping freshness and authentication integrations for remote access. That safeguard addresses another potential failure: A contractor's User-ID group is used on a permit rule but the firewall has no current user-to-IP mapping for VPN clients. It is not the most targeted recurring control for the described cause: An inactive Security rule cannot enforce its attachments or authorize applications.