11-16-2017 11:05 PM
Our customer want to add certificate to Controller for Web-UI and Captive Portal. When creating the cert, they don't want to use main domain (abc.com), they want to use cert.abc.com instead. I don't have experience with this. Could you please let me know can we use sub-domain in this case?
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11-20-2017 01:27 AM
Yes, you can use a subdomain and that is even very common. Most customers use something like: guest.customer.com, login.customer.com, wifi.customer.com, securelogin.customer.com.
For the captive portal login, the name does not even need to be in DNS as the controller will respond to DNS requests for the name in your certificate. If you want the controller WebUI show up without certificate warnings, make sure your internal DNS points for the name in your certificate to the management IP.
If you have urgent issues, please contact your Aruba partner or Aruba TAC (click for contact details).