Answer / pulin

NIS, (Network Information Services), enables account logins
and other services (host name resolution, xinetd network
services configuration, ...), to be centralized to a single
NIS server.
NIS allows a central server to manage password
authentication, host, services, etc which would normally be
provided by the local
files /etc/passwd, /etc/shadow, /etc/groups, /etc/hosts, /et
c/services, /etc/networks, /etc/rpc, /etc/protocols, /etc/al
iases

Requires RPM packages:

•ypbind - RPC port binding service
•portmap - RPC port mapping
•ypserv - NIS server daemons
•yp-tools - NIS support commands (ypcat, yppasswd,
ypwhich, ...)
•nscd - Handles password and group lookups and caches the
results. Used by LDAP and NIS. Configuration of nscd
defines which files are supported by NIS. i.e.
authentication requires passwd, shadow and group file
support. Uses configuration file /etc/ncsd.conf

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