Hi Matt,
If you haven't updated the certificate used for the web console on the controller you can just browse to the controller then open the certificate from your browser of choice.
I hope that makes sense and isn't complete nonsense. (I've not had my coffee today yet!)
Cheers
James
EDIT:
I've had my coffee.
This should point you in the right direction.
Aruba has obtained a new certificate labeled “securelogin.arubanetworks.com” from a public CA
that replaces the old default certificate. The new certificate has an expiration date of November
21, 2013. This certificate is included as part of the following ArubaOS software releases:
6.1 beginning with release 6.1.0.0
6.0 beginning with release 6.0.1.1
5.0 beginning with release 5.0.3.2
3.4 beginning with release 3.4.4.2
3.3 beginning with release 3.3.3.10
All other ArubaOS releases dated later than June 1, 2011