Enabling Kerberos for login authentication on Microsoft Windows
Start the Microsoft Windows ODBC Data Source administrator.
Select the Sybase Adaptive Server Enterprise ODBC Driver.
Select the User DSN/ System DSN tab and click the datasource that you would like to modify, or choose Add New Data Source.
On the Security tab, select Use Active Directory under the Kerberos Authentication Client.
Enter the name of the server principal in the Server Principal edit box. This name should match the name of the Adaptive Server configured in the KDC.