To use Kerberos authentication for NFS, GSS security must be enabled. To do so, select in the initial YaST dialog. Additionally complete the following steps:
Make sure that both the server and the client are in the same Kerberos
domain. This means that they access the same KDC (Key Distribution
Center) server and share their krb5.keytab file
(the default location on any machine is
/etc/krb5.keytab).
Start the gssd service on the client with rcgssd start.
Start the svcgssd service on the server with rcsvcgssd start.
For further information about configuring kerberized NFS, refer to the links in Section 37.7, “For More Information”.