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

NAME

     ypbind -- create and maintain a binding to a NIS server

SYNOPSIS

     ypbind [-broadcast] [-insecure] [-ypset] [-ypsetme]

DESCRIPTION

     ypbind finds the server for a particular NIS domain and stores information about it in a ``binding file''.  This binding information includes
     the IP address of the server associated with that particular domain and which port the server is using.  This information is stored in the
     directory /var/yp/binding in a file named with the convention <domain>.version, where <domain> is the relevant domain.  The NIS system only
     supplies information on version 2.

     If ypbind is started without the -broadcast option, ypbind steps through the list of NIS servers specified in
     /var/yp/binding/<domain>.ypservers and contacts each in turn attempting to bind to that server.  It is strongly recommended that these hosts
     are in the local hosts file, and that hosts are looked up in local files before the NIS hosts map.

     If ypbind is started with the -broadcast option, or if /var/yp/binding/<domain>.ypservers does not exist, ypbind broadcasts to find a process
     willing to serve maps for the client's domain.

     Once a binding is established, ypbind maintains this binding by periodically communicating with the server to which it is bound.  If the
     binding is somehow lost, e.g by server reboot, ypbind marks the domain as unbound and attempts to re-establish the binding.  When the binding
     is once again successful, ypbind marks the domain as bound and resumes its periodic check.

     The options are as follows:

     -broadcast  sends a broadcast requesting a NIS server to which to bind.

     -insecure	 do not require that the server is running on a reserved port.	This may be necessary when connecting to SunOS 3.x or ULTRIX NIS
		 servers.

     -ypset	 ypset(8) may be used to change the server to which a domain is bound.

     -ypsetme	 ypset(8) may be used only from this machine to change the server to which a domain is bound.

     The -broadcast -ypset, and -ypsetme, options are inherently insecure and should be avoided.

FILES

     /var/yp/binding/<domain>.version - binding file for <domain>.  /var/yp/binding/<domain>.ypservers - explicit list of servers to bind to for
     <domain>.

DIAGNOSTICS

     Messages are sent to syslogd(8) using the LOG_DAEMON facility.

SEE ALSO

     domainname(1), ypcat(1), ypmatch(1), ypwhich(1), nis(8), yppoll(8), ypset(8)

AUTHORS

     This version of ypbind was originally implemented by Theo de Raadt.  The ypservers support was implemented by Luke Mewburn.

BSD
								 February 26, 2005							       BSD