Question 330
During a controlled Cisco ISE access policy lab verification, engineers observe: A network operations contractor may execute show commands for diagnostics but must not make interface or routing configuration changes on managed switches. What ongoing control should operations standardize for this scenario?
Explanation
Correct Answer
This safeguard directly addresses tacacs command set show only permission: Test command sets with both allowed and denied examples rather than assuming the shell privilege level restricts every command. The risk being prevented is: TACACS+ command authorization uses an explicit command set and matching authorization rule, separately from successful login to the device. A safeguard aimed at another fault would not control this issue.
Incorrect Answers
Authentication records identify login attempts, whereas TACACS+ command accounting needs separate device configuration to report executed administrative actions. “Confirm command accounting and log retention on each device platform after configuration templates are updated” would remedy that alternative situation, but it would not correct the present issue: TACACS+ command authorization uses an explicit command set and matching authorization rule, separately from successful login to the device.
“Keep administrative AAA servers, policy sets, and permitted device sources distinct from general endpoint access configurations” is the supported response when RADIUS network access authorization and TACACS+ device administration offer different policy and command-control capabilities in ISE. Here the decisive response is “Test command sets with both allowed and denied examples rather than assuming the shell privilege level restricts every command”, so that different intervention does not meet the stated requirement.
Command authorization must have an effective explicit deny or allowlist design that is evaluated as configured; a broad permit can undermine restrictions. “Review command wildcard and argument matching with controlled negative tests before assigning command sets to production administrators” applies to that other condition. The reported evidence is a network operations contractor may execute show commands for diagnostics but must not make interface or routing configuration changes on managed switches; this alternative would address the wrong dependency.