You can try to turn it on here.
WLC can authenticate users to RADIUS server with Password Authentication Protocol (PAP), Challenge Handshake Authentication Protocol (CHAP) or EAP-MD5 (Message Digest5). This is a global parameter and is configurable from GUI or CLI:
From GUI: navigate to Controller > Web RADIUS Authentication
From CLI: enter config custom-web RADIUSauth <pap|chap|md5chap>
Note: The NAC guest server only uses PAP.
I think this is certainly supported. The attached configuration file is release 7.0.116, you can refer to it.
You can try to turn it on here.
WLC can authenticate users to RADIUS server with Password Authentication Protocol (PAP), Challenge Handshake Authentication Protocol (CHAP) or EAP-MD5 (Message Digest5). This is a global parameter and is configurable from GUI or CLI:
From GUI: navigate to Controller > Web RADIUS Authentication
From CLI: enter config custom-web RADIUSauth <pap|chap|md5chap>
Note: The NAC guest server only uses PAP.