Question 320
A network identity engineer receives the following requirement: A guest portal is accessible on the corporate management address but not from the isolated guest network after a firewall segmentation change. Which response most directly corrects the described failure?
Explanation
Correct Answer
Permit the specific guest-facing portal IP/FQDN and TLS ports through the approved segmentation path while retaining management isolation. This is appropriate because a portal may be healthy on ISE but unreachable from guests if network policy blocks its published listener. It should be verified by this evidence: A test visitor on the actual isolated SSID loads the portal while ISE management remains inaccessible.
Incorrect Answers
The approved guest receives the expected onboarding notification and uses it within the account's valid window. The repeat risk here is different: a pilot device sees the approved brand and terms, and its acknowledgement is recorded when required. A directly relevant preventive control is: Permit the specific guest-facing portal IP/FQDN and TLS ports through the approved segmentation path while retaining management isolation.
A test visitor on the actual isolated SSID loads the portal while ISE management remains inaccessible. The repeat risk here is different: a pilot device sees the approved brand and terms, and its acknowledgement is recorded when required. A directly relevant preventive control is: Permit the specific guest-facing portal IP/FQDN and TLS ports through the approved segmentation path while retaining management isolation.
The visitor is denied before activation, accepted during the window, and denied after expiry. The repeat risk here is different: a pilot device sees the approved brand and terms, and its acknowledgement is recorded when required. A directly relevant preventive control is: Permit the specific guest-facing portal IP/FQDN and TLS ports through the approved segmentation path while retaining management isolation.