The Authorization subentity of the SNA LU Services entity is created
   to describe connection parameters that are optionally matched to an
   incoming client connection to validate access to Peer Server LUs.
   You can create multiple instances of the Authorization entity each
   with different characterisitics. If the information passed by a user
   matches the characteristics of an Authorization entity associated
   with the specified LU, then SNA LU Services allows the user to access
   the LU. An Authorization entity can describe DECnet, TCP/IP, or local
   connections. For a TCP/IP connection, the internet node characteristic
   is used instead of node.