You can install wildcard certificates on the vWLAN, however if you are using Internal 802.1x you may find that Windows clients are unable to associate with any access point (AP).
Install and Renew SSL Cert vWLAN Version 2.2.1 and Later
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Unfortunately the same certificate used for management will be what is sent to clients when web authentication is used. If you want to use SSL with external 802.1x, you will want to consult the documentation of your RADIUS server.
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