ypserv(8) - NetBSD Manual Pages

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YPSERV(8)               NetBSD System Manager's Manual               YPSERV(8)


NAME

     ypserv -- NIS server daemon


SYNOPSIS

     ypserv [-dfl] [-p port]


DESCRIPTION

     ypserv is a fundamental part of the network information system called
     NIS.  This server provides information from NIS maps to the NIS clients
     on the network.

     A NIS map is stored on the server as a db(3) database.  A number of NIS
     maps is grouped together in a domain.  ypserv determines the domains it
     serves by looking for a directory with the domain name in /var/yp.

     In an effort to improve the security of NIS (which has, historically, not
     been very good), this ypserv has support for libwrap-based access con-
     trol.  See hosts_access(5) for more information.  The daemon used for
     access control is the name which ypserv was invoked as (typically
     ``ypserv'' ).  If a host is not allowed to query this NIS server, ypserv
     will return the NIS result code YP_NODOM.

     The process pid of the ypserv process can be found in the file
     /var/run/ypserv.pid.

     The options are as follows:

     -d      Use internet Domain Name System. If a query to map hosts.byname
             or hosts.byaddr fails, make a DNS query and return the result if
             successful.

     -f      Run in the foreground.

     -l      Enable logging of all requests.

     -p port
             Bind to the specified port instead of dynamically allocating one.

     All messages are sent to the system log with the facility LOG_DAEMON.
     Error messages have the priority LOG_ERR.  Refused requests are logged
     with the priority LOG_WARNING.  All other messages are logged with the
     priority LOG_INFO.


FILES

     /var/run/ypserv.pid


SEE ALSO

     syslog(3), hosts_access(5), nis(8), syslogd(8), ypbind(8), ypinit(8)


AUTHORS

     This implementation of ypserv was originally written by Mats O Jansson
     <moj@stacken.kth.se>.  The access control code was later re-written from
     scratch by
     Jason R. Thorpe <thorpej@NetBSD.org>.

NetBSD 4.0                       May 20, 2006                       NetBSD 4.0