6 XHOST, MOTIF_TOYS, Server access control program for X  K The xhost program is used to add and delete host names or user names to the M list allowed to make connections to the X server.  In the case of hosts, this H provides a rudimentary form of privacy control and security.  It is onlyN sufficient for a workstation (single user) environment, although it does limitI the worst abuses.  Environments which require more sophisticated measures N should implement the user-based mechanism or use the hooks in the protocol for0 passing other authentication data to the server.   