I configured my Cisco ACE appliance for IAS Radius authentication. The authentication is not sucessful. I tried different attribute settings on the IAS server, but still the authentication fails.The configuration details on ACE appliance is as below,
From the last screenshot you have in your document, the Microsoft server is stating the reason for the failure as:
Authentication was not successful because an unknown user name or incorrect password was used
You might want to get a capture of the authentication process and verify that the username being sent to the RADIUS server is exactly what is configured on the RADIUS server. Also, double-check the password used. Your configuration on the ACE looks Okay, so I would focus for now on the user name and password.
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