krb5: krb5 (is a MIT Kerberos network authentication protocol) krb5: krb5: Kerberos is a network authentication protocol. It is designed krb5: to provide strong authentication for client/server applications krb5: by using secret-key cryptography. A free implementation of this krb5: protocol is available from MIT. krb5: krb5: krb5: krb5: krb5: