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+.\" $NetBSD: nis.8,v 1.3 2009/10/24 12:21:31 reed Exp $
+.\"
+.\" Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
+.\" All rights reserved.
+.\" Portions Copyright (c) 1994 Jason R. Thorpe. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. The name of the author may not be used to endorse or promote
+.\" products derived from this software without specific prior written
+.\" permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd February 26, 2005
+.Dt NIS 8
+.Os
+.Sh NAME
+.Nm nis ,
+.Nm yp
+.Nd description of the NIS (formerly YP) subsystem
+.Sh SYNOPSIS
+.Nm ypbind
+.Op Fl ypset
+.Nm ypbind
+.Op Fl ypsetme
+.Pp
+.Nm ypset
+.Op Fl h Ar host
+.Op Fl d Ar domain
+.Ar server
+.Pp
+.Nm yppoll
+.Op Fl h Ar host
+.Op Fl d Ar domain
+.Ar mapname
+.Pp
+.Nm ypcat
+.Op Fl kt
+.Op Fl d Ar domainname
+.Ar mapname
+.Nm ypcat
+.Fl x
+.Pp
+.Nm ypmatch
+.Op Fl kt
+.Op Fl d Ar domainname
+.Ar key ... mapname
+.Nm ypmatch
+.Fl x
+.Pp
+.Nm ypwhich
+.Op Fl d Ar domain
+.Oo
+.Op Fl t
+.Fl m Op Ar mname
+|
+.Ar host
+.Oc
+.Nm ypwhich
+.Fl x
+.Pp
+.Nm ypserv
+.Op Fl d
+.Op Fl x
+.Pp
+.Nm yppush
+.Op Fl d Ar domainname
+.Op Fl h Ar hostname
+.Op Fl v
+.Ar mapname
+.Pp
+.Nm ypxfr
+.Op Fl bcf
+.Op Fl d Ar domain
+.Op Fl h Ar host
+.Op Fl s Ar domain
+.Op Fl C Ar tid prog ipadd port
+.Ar mapname
+.Pp
+.Nm ypinit
+.Fl m
+.Op Ar domainname
+.Nm ypinit
+.Fl s
+.Ar master_server
+.Op Ar domainname
+.Pp
+.Nm yptest
+.Pp
+.Nm rpc.yppasswdd
+.Op Fl noshell
+.Op Fl nogecos
+.Op Fl nopw
+.Op Fl m Ar arg1 arg2 ...
+.Sh DESCRIPTION
+The
+.Tn NIS
+subsystem allows network management of passwd and group file
+entries through the functions
+.Xr getpwent 3
+and
+.Xr getgrent 3 .
+.Tn NIS
+also provides hooks for other client programs, such as
+.Xr amd 8
+and
+.Xr rpc.bootparamd 8 ,
+that can use
+.Tn NIS
+maps.
+.Pp
+Password maps in standard YP are insecure, because the pw_passwd
+field is accessible by any user. A common solution to this is to
+generate a secure map (using
+.Dq makedbm -s )
+which can only be accessed by a client bound to a privileged port.
+To activate the secure map, see the appropriate comment in
+.Pa /var/yp/Makefile.yp .
+.Pp
+The
+.Tn NIS
+subsystem is conditionally started in
+.Pa /etc/rc .
+See the
+.Pa /etc/rc.conf
+file for configuration variables.
+.Sh SEE ALSO
+.Xr domainname 1 ,
+.Xr ypcat 1 ,
+.Xr ypmatch 1 ,
+.Xr ypwhich 1 ,
+.Xr ypclnt 3 ,
+.Xr group 5 ,
+.Xr hosts_access 5 ,
+.Xr nsswitch.conf 5 ,
+.Xr passwd 5 ,
+.Xr rc.conf 5 ,
+.Xr rc 8 ,
+.Xr ypbind 8 ,
+.Xr ypinit 8 ,
+.Xr yppoll 8 ,
+.Xr yppush 8 ,
+.Xr ypserv 8 ,
+.Xr ypset 8 ,
+.Xr yptest 8 ,
+.Xr ypxfr 8
+.Sh HISTORY
+The
+.Tn NIS
+client subsystem was originally written by Theo de Raadt
+to be compatible with Sun's implementation. The
+.Tn NIS
+server suite was originally written by Mats O Jansson.
+.Sh BUGS
+If
+.Xr ypbind 8
+cannot find a server, the system behaves the same way as Sun's code:
+it hangs.
+.Pp
+The
+.Sq secure map
+feature is not compatible with non-BSD implementations as found
+e.g. in Solaris.