Question 860
An operations group at a service-provider edge resolved: A traffic flow is assigned a custom app using override but its Security policy only permits the original unknown-tcp classification, causing session denial. Which ongoing safeguard should become part of its change process?
Explanation
Correct Answer
Test Security-rule dependencies when introducing any override. This control reduces recurrence of the documented mechanism: Override changes the application's effective classification used by Security policy. It creates a repeatable check around the needed response: Update the intended Security policy to match the appropriately defined custom app and required constraints.
Incorrect Answers
Retire overrides alongside application modernization milestones. That safeguard addresses another potential failure: After a legacy protocol is replaced, its application override remains above normal classification rules for the same destination. It is not the most targeted recurring control for the described cause: Override changes the application's effective classification used by Security policy.
Review override rule width and affected session counts after every change. That safeguard addresses another potential failure: An application override rule matches all TCP traffic to a shared server rather than only a legacy protocol port, hiding unrelated web applications from normal App-ID. It is not the most targeted recurring control for the described cause: Override changes the application's effective classification used by Security policy.
Escalate attempted override-based threat-bypass changes for expert review. That safeguard addresses another potential failure: An operator assumes application override preserves all application-layer threat scanning and uses it to bypass a false positive security event. It is not the most targeted recurring control for the described cause: Override changes the application's effective classification used by Security policy.