Assigns the default access to all nodes which do not have a
 specific node ACCESS entry in the volatile data base.  There are
 four options:

    INCOMING     Allows logical link connections from the remote node.

    OUTGOING     Allows the local node to initiate connections to the
                 remote node; but does not allow connections from the
                 remote node.

    BOTH         Allows incoming and outgoing logical link connections.
                 This is the default.

    NONE         Does  not  allow  incoming  or  outgoing logical link
                 connections to this node.