Before configuring Microsoft SQL Server JDBC Driver
               Version 6 with Kerberos, ensure that the following prerequisites
               are configured on your environment.
            
            Servers:
            
               - Active Directory Domain Services 
 
               - Windows Domain on Windows Server 2008
 
               - Windows Server 2012
 
               - Kerberos authentication enabled Windows Server 2012R2 (one Primary
                  Domain Controller, and at least one Secondary Controller)
               
 
            
            Clients Joined to the Domain:
            
               - SQL Server servers running Windows 2012R2
 
               - client workstations