You must configure Adaptive Server Enterprise to delegate authentication to Kerberos, to use it as an authentication system.
See the Adaptive Server Enterprise System Administration Guide for more information. On Windows, the Kerberos client library comes installed with the client library.
To use Kerberos with the Adaptive Server ADO.NET Data Provider, you must have the MIT/CyberSafe Client library configured and enable Adaptive Server for Kerberos.