Question

A security administrator is troubleshooting RADIUS authentication issues from a newly implemented controller-based wireless deployment. The RADIUS server contains the following information in its logs:

A RADIUS message was received from the invalid RADIUS client IP address
Based on this information, the administrator reconfigures the RADIUS server, which results in the following log data:
An Access-Request was received from RADIUS client with a Message-Authenticator attribute that is not valid

To correct this error message, the administrator makes an additional change to the RADIUS server.

Which of the following did the administrator reconfigure on the RADIUS server?

A. Added the controller address as an authorized client
B. Registered the RADIUS server to the wireless controller
C. Corrected a mismatched shared secret
D. Renewed the expired client certificate
E. Reassigned the RADIUS policy to the controller
F. Modified the client authentication method

Answer 1

The administrator reconfigured the RADIUS server by c) correcting a mismatched shared secret.

Step-by-step explanation:

The administrator reconfigured the RADIUS server by correcting a mismatched shared secret. This means that the secret key used by the RADIUS server and the controller did not match, causing the authentication issues. Once the shared secret was corrected, the RADIUS server was able to validate the Access-Request received from the controller's IP address.