AFS3 BC Service Interface

  Code  Procedure                       Contact/Source
======  ==============================  ==============================
     1..99 RESERVED LEGACY SPACE        IBM
   100  Print                           IBM AFS 3.0
   101..65535 RESERVED LEGACY SPACE     IBM


Rx Security Class Registrations

Name       ID     Description
-------  ------   -----------------------------------------------
NULL          0   No security class
VAB	      1   Vice tokens with bcrypt
KAD           2   Kerberos tokens with fcrypt optional
KAD_REQ       3   Kerberos tokens with fcrypt required
RXGK          4   GSS-API Kerberos Crypto Framework
RXK5          5   Kerberos 5 authentication for rxh
YFS-RXGK      6   AuriStorFS RXGK variant (afs3@auristor.com)