A network administrator sets up MAC-Auth and captive portal to Aruba ClearPass on AOS-Switches. The solution seems to work for most guests. However, some guests open their browsers and are not redirected to the captive portal.
How should the administrator address the likely cause of the issue?
If some guests are not being redirected to the captive portal, one likely cause is that these guests have an HTTPS homepage set on their browsers. Expired certificates on the switches would prevent proper HTTPS redirection to the captive portal. Thus, replacing the expired certificates and setting their usage to captive portal should resolve the issue.
I say C: