Question 540
During a Cisco ISE postchange review, the following is observed: An administrator selects the HTTPS portal certificate as the only identity trusted for BYOD client EAP, confusing server authentication and personal device enrollment. Which observation would BEST verify successful remediation?
Explanation
Correct Answer
A browser trusts the portal hostname and the same device separately authenticates with its valid enrolled client credential. The required remediation is: Configure the proper separate trust relationships for portal HTTPS identity, EAP server identity, and issued client certificates. It works because the certificate protecting a portal web session serves a different role from the client certificate used as an EAP-TLS identity.
Incorrect Answers
Renew or reprovision a valid approved certificate and verify the permitted trust chain and identity mapping before reauthorizing the device. The repeat risk here is different: Configure the proper separate trust relationships for portal HTTPS identity, EAP server identity, and issued client certificates. A directly relevant preventive control is: A browser trusts the portal hostname and the same device separately authenticates with its valid enrolled client credential.
Adjust the supported CA certificate template and issuance policy to include required client-authentication usages and compatible key constraints. The repeat risk here is different: Configure the proper separate trust relationships for portal HTTPS identity, EAP server identity, and issued client certificates. A directly relevant preventive control is: A browser trusts the portal hostname and the same device separately authenticates with its valid enrolled client credential.
The personal laptop provisions on the enrollment SSID and then authenticates to the secure SSID with the approved certificate. The repeat risk here is different: Configure the proper separate trust relationships for portal HTTPS identity, EAP server identity, and issued client certificates. A directly relevant preventive control is: A browser trusts the portal hostname and the same device separately authenticates with its valid enrolled client credential.