Question 240
At Riverton Utilities, the operational network security team administers FortiGate-based protection for distributed field operations and private monitoring systems under requirements for limited administrative access and auditable controls. An independent validation is requested for: A policy administrator uses address-object negation without verifying its scope, accidentally granting access to every destination except one. Which observed outcome BEST demonstrates that the intended correction works?
Explanation
Correct Answer
A controlled authorized flow succeeds and multiple disallowed destinations no longer match the corrected policy. This outcome validates the intended correction for: A policy administrator uses address-object negation without verifying its scope, accidentally granting access to every destination except one. The associated approved corrective action is: Replace the confusing negative match with explicit approved source and destination objects and verify policy ordering. The Riverton Utilities reviewer can therefore distinguish observable protection from an untested configuration claim.
Incorrect Answers
A test login proves the intended role and a separate traffic session matches only the appropriate authenticated user policy. This would verify a separate corrective action: Configure the supported authentication integration in the correct administrative or firewall user context and scope the access rule separately. That separate change addresses: A security administrator confuses SAML identity provider trust for administrative login with the firewall policy identity enforcement required for user traffic. It does not validate the current Riverton Utilities issue: A policy administrator uses address-object negation without verifying its scope, accidentally granting access to every destination except one. The relevant acceptance evidence is: A controlled authorized flow succeeds and multiple disallowed destinations no longer match the corrected policy.
A revoked test account cannot establish a new permitted session and existing authorization expires or is invalidated as documented. This would verify a separate corrective action: Set supported authentication session lifetime and revocation behavior consistent with the remote identity source and risk requirements. That separate change addresses: Firewall user sessions remain authorized long after an employee's access is revoked because authentication timeouts and revocation steps were not reviewed. It does not validate the current Riverton Utilities issue: A policy administrator uses address-object negation without verifying its scope, accidentally granting access to every destination except one. The relevant acceptance evidence is: A controlled authorized flow succeeds and multiple disallowed destinations no longer match the corrected policy.
A controlled trace identifies both the actual private client address and its assigned translated public address without conflating them. This would verify a separate corrective action: Correlate FortiGate session and traffic log original and translated address fields for the matched SNAT rule. That separate change addresses: The help desk interprets a NAT session's translated source field as the real endpoint identity and records the wrong affected client. It does not validate the current Riverton Utilities issue: A policy administrator uses address-object negation without verifying its scope, accidentally granting access to every destination except one. The relevant acceptance evidence is: A controlled authorized flow succeeds and multiple disallowed destinations no longer match the corrected policy.