Question 480
During a privileged access assessment at Lakeview Insurance, engineers say that they resolved this finding: A Cisco FTD rule that should be narrow matches all internal subnets because a variable references the wrong network object. Which result provides the STRONGEST acceptance evidence?
Explanation
Correct Answer
A test from the intended subnet succeeds and adjacent subnets remain denied. This is the decisive evidence for the original problem: A Cisco FTD rule that should be narrow matches all internal subnets because a variable references the wrong network object. It verifies that the intended corrective control—Correct network objects and evaluate the effective access-control match criteria—works in the relevant environment; a completed change ticket alone would not prove the outcome at Lakeview Insurance.
Incorrect Answers
Prohibited sites are denied and authorized business sites continue to work. This would be relevant evidence for a different failure: Users can browse prohibited categories because a broad allow rule precedes the URL-filtering rule, usually addressed by Correct rule ordering and category criteria in the FTD access control policy. It does not demonstrate that the current problem at Lakeview Insurance was resolved. The specific required evidence is: A test from the intended subnet succeeds and adjacent subnets remain denied.
A benign file passes and a controlled malicious sample generates a block or detection event. This would be relevant evidence for a different failure: Downloaded malicious objects pass a firewall policy because file and malware inspection is not enabled on the relevant flows, usually addressed by Apply supported file and malware policies to selected permitted traffic. It does not demonstrate that the current problem at Lakeview Insurance was resolved. The specific required evidence is: A test from the intended subnet succeeds and adjacent subnets remain denied.
Policy revision on the managed device matches the approved configuration. This would be relevant evidence for a different failure: New access-control rules are edited in management but never deployed to the active firewall, usually addressed by Deploy the approved policy changes and validate device deployment status. It does not demonstrate that the current problem at Lakeview Insurance was resolved. The specific required evidence is: A test from the intended subnet succeeds and adjacent subnets remain denied.