Naming and Directory Services (DNS, NIS, and LDAP)

TABLE 4–3 NIS Map DescriptionsMap Name(Continued)Corresponding NISAdmin FileDescriptionpasswd.byuidpasswd andshadowSame as passwd.byname, except thatkey is user ID.prof_attr prof_attr Contains attributes for execution profiles.protocols.byname protocols Contains network protocols known toyour network.protocols.bynumber protocols Same as protocols.byname, exceptthat key is protocol number.rpc.bynumber rpc Contains program number and name ofRPCs known to your system. Key is RPCprogram number.services.byname services Lists Internet services known to yournetwork. Key is port or protocol.services.byservice services Lists Internet services known to yournetwork. Key is service name.user_attr user_attr Contains extended attributes for usersand roles.ypservers N/A Lists NIS servers known to yournetwork.New ipnodes maps (ipnodes.byaddr and ipnodes.byname) are added to NIS.The maps store both IPv4 and IPv6 addresses. See the ipnodes(4) man page. NISclients and servers can communicate using either IPv4 or IPv6 RPC transports.The ageing.byname mapping contains information used by yppasswdd to read andwrite password aging information to the DIT when the NIS-to-LDAP transition isimplemented. If password aging is not being used, then it can be commented out ofthe mapping file. For more information about the NIS-to-LDAP transition, seeChapter 15.Using NIS MapsNIS makes updating network databases much simpler than with the /etc filessystem. You no longer have to change the administrative /etc files on every machineeach time you modify the network environment.74 System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP) • January 2005