Kerberos in Active Directory
Although Kerberos might seem like black magic to many systems administrators, it’s one of Active Directory’s (AD’s) key underpinnings. Nearly all of Kerberos’s configuration is abstracted, making actual interaction with the protocol uncommon. However, Kerberos is used every time you log on to an AD-joined machine, as well as when you access network resources such as file shares and applications.
[RESOURCE AUTHOR]

Brian Desmond
Brian is a principal at Ravenswood Technology Group where he leads a team of professionals focused on delivering best-in-breed consulting services for the Microsoft security and identity management ecosystem.
Brian has been recognized annually as a Microsoft MVP since 2003 and is the author of the fourth and fifth editions of Active Directory from O'Reilly.