NTP
How to Set Up a Diffie-Hellman Key for an NIS User
NFS Services and Secure RPC
How to Share NFS Files With Diffie-Hellman Authentication
How to Configure Kerberos NFS Servers
About Secure RPC
Kerberos Realms
Clock Synchronization Within a Kerberos Realm
How to Use kdcmgr to Configure the Master KDC