Thanks for your replies.
I have the sponsor_lookup field working, the steps I took to get there are described in my first post.
First question: Is there no documentation for the use of this new field - and sponsor lookups in general? It took a lot of trial and error to get there which could have been avoided with some decent tech notes.
Sounds like this would help koenv too.
Second question: going back to my original problem, I have the sponsor lookup working perfectly when I test it from a LAN connected computer by going to the URL https:[ClearpassIP]/guest/self_reg_page.php
However, when I test it on an actual wireless client, the browser is correctly redirected to the captive portal page, everything looks fine, BUT....
the sponsor lookup just hangs on search, without finding anything.
At this point, the address showing in the browser's address bar, is the user's intended page, e.g. www.google.com
the really strange thing is that if I change this to https:[ClearpassIP]/guest/self_reg_page.php, the captive portal page reloads with no apparent difference BUT...
the sponsor lookup now works!
So why isn't it working on captive portal redirection?
I think I have eliminated the possibility this could be due to a restriction on the controller. We are using Instant APs. The Virtual controller is set as follows (weakened security for testing):
---------------------------------------
3. Security
Splash: External RADIUS Authentication
Auth server: clearpass
Re-auth internal: 0 hrs
Accounting: Enabled
Acc int. 10 mins
Blacklisting: Disabled
Encryption: enabled
WPA-2 8-63 chars
External splash: [clearpassIP]
URL: /guest/self_reg_page.php
port: 80
capt portal failure: deny internat
automatic whitelisting: disabled
4. Access
Unrestricted
---------------------------------------
So is there something I can change in Clearpass manager (maybe Configuration->Services->Guest Access - Web Login Pre-Auth??)
or something in Clearpass Guest that I can change to get this working?