You can use System Manager to create and manage Kerberos realm services.
More information
Creating a Kerberos realm configuration
If you want to use Kerberos authentication for client access, you must configure the storage virtual machine (SVM) to use an existing Kerberos realm. You can use System Manager to create a Kerberos realm configuration, which enables SVMs to use Kerberos security services for NFS.
Using Kerberos with NFS for strong security You can use Kerberos to provide strong authentication between SVMs and NFS clients to provide secure NFS communication. Configuring NFS with Kerberos increases the integrity and security of NFS client communications with the storage system.
Kerberos authentication for CIFS
With Kerberos authentication, upon connection to your CIFS server, the client negotiates the highest possible security level. However, if the client cannot use Kerberos authentication, Microsoft NTLM or NTLM V2 is used to authenticate with the CIFS server.
Kerberos Realm window
You can use the Kerberos Realm window to provide authentication between storage virtual machines (SVMs) and NFS clients to ensure secure NFS communication.