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yp(8) [netbsd man page]

NIS(8)							    BSD System Manager's Manual 						    NIS(8)

nis, yp -- description of the NIS (formerly YP) subsystem SYNOPSIS
ypbind [-ypset] ypbind [-ypsetme] ypset [-h host] [-d domain] server yppoll [-h host] [-d domain] mapname ypcat [-kt] [-d domainname] mapname ypcat -x ypmatch [-kt] [-d domainname] key ... mapname ypmatch -x ypwhich [-d domain] [[-t] -m [mname] | host] ypwhich -x ypserv [-d] [-x] yppush [-d domainname] [-h hostname] [-v] mapname ypxfr [-bcf] [-d domain] [-h host] [-s domain] [-C tid prog ipadd port] mapname ypinit -m [domainname] ypinit -s master_server [domainname] yptest rpc.yppasswdd [-noshell] [-nogecos] [-nopw] [-m arg1 arg2 ...] DESCRIPTION
The NIS subsystem allows network management of passwd and group file entries through the functions getpwent(3) and getgrent(3). NIS also provides hooks for other client programs, such as amd(8) and rpc.bootparamd(8), that can use NIS maps. 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 ``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 /var/yp/Makefile.yp. The NIS subsystem is conditionally started in /etc/rc. See the /etc/rc.conf file for configuration variables. SEE ALSO
domainname(1), ypcat(1), ypmatch(1), ypwhich(1), ypclnt(3), group(5), hosts_access(5), nsswitch.conf(5), passwd(5), rc.conf(5), rc(8), ypbind(8), ypinit(8), yppoll(8), yppush(8), ypserv(8), ypset(8), yptest(8), ypxfr(8) HISTORY
The NIS client subsystem was originally written by Theo de Raadt to be compatible with Sun's implementation. The NIS server suite was origi- nally written by Mats O Jansson. BUGS
If ypbind(8) cannot find a server, the system behaves the same way as Sun's code: it hangs. The 'secure map' feature is not compatible with non-BSD implementations as found e.g. in Solaris. BSD
February 26, 2005 BSD

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ypset(1M)						  System Administration Commands						 ypset(1M)

ypset - point ypbind at a particular server SYNOPSIS
/usr/sbin/ypset [-d ypdomain] [-h host] server DESCRIPTION
In order to run ypset, ypbind must be initiated with the -ypset or -ypsetme options. See ypbind(1M). ypset tells ypbind to get NIS services for the specified ypdomain from the ypserv process running on server. If server is down, or is not running ypserv, this might not be dis- covered until an NIS client process tries to obtain a binding for the domain. At this point, the binding set by ypset is tested by ypbind. If the binding is invalid, ypbind attempts to rebind for the same domain. ypset is useful for binding a client node that is not on a broadcast net, or is on a broadcast net that is not running an NIS server host. It is also useful for debugging NIS client applications, for instance, where an NIS map exists only at a single NIS server host. Where several hosts on the local net are supplying NIS services, ypbind can rebind to another host, even while you attempt to find out if the ypset operation succeeded. For example, if you enter the ypset command below, you might get the subsequent response from ypwhich: example% ypset host1 example% ypwhich host2 The sequence shown above is a function of the NIS subsystem's attempt to load-balance among the available NIS servers, and occurs when host1 does not respond to ypbind because it is not running ypserv (or is overloaded), and host2, running ypserv, obtains the binding. server indicates which NIS server to bind to, and must be specified as a name or an IP address. This works only if the node has a current valid binding for the domain in question and ypbind has been set to allow use of ypset. In most cases, server should be specified as an IP address. ypset tries to bind over a connectionless transport. The NIS library call, yp_all(), uses connection-oriented transport and derives the NIS server's address based on the connectionless address supplied by ypset. Refer to ypfiles(4) for an overview of the NIS name service. OPTIONS
-d ypdomain Use ypdomain, instead of the default domain. -h host Set ypbind's binding on host, instead of locally. Specify host as a name. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnisu | +-----------------------------+-----------------------------+ SEE ALSO
ypwhich(1), ypfiles(4), attributes(5) SunOS 5.10 14 Sep 1992 ypset(1M)
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