Network Information Service
Network Information Service (also Network Information System ) or NIS for short is a directory service for distributing configuration data such as user names or computer names in a computer network . NIS was developed by Sun Microsystems as the “ Yellow Pages ” (YP) client-server protocol .
NIS / YP can be used as a central directory for user accounts, computer names and other data in a computer network. For example, in a common UNIX environment, the list of users (for authentication ) is placed in the / etc / passwd file. Using NIS adds another “global” user list that can be used to authenticate users on any computer.
Sun has licensed this technology to practically all Unix manufacturers.
The name Yellow Pages (German: Yellow Pages ) is a registered trademark of British Telecommunications for its branch telephone directory in Great Britain . Sun therefore changed the name of the system to NIS, although all commands and functions still start with “yp”.
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