03-30-2011
Did you make any changes to the system logger?
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Hi!
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YPSERV(8) BSD System Manager's Manual YPSERV(8)
NAME
ypserv -- YP server daemon
SYNOPSIS
ypserv [-1] [-a aclfile] [-d] [-x]
DESCRIPTION
Ypserv is a fundamental part of the network information system called YP. This server provides information from YP maps to the YP clients on
the network.
A YP map is stored on the server as a db(3) database. A number of YP 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.
YP hasn't been known for high security through the years. In recent years security has improved by restricting access to the server. In SunOS
4.1 has a new file occured named /var/yp/securenet. It contains networks the server can assume is secure. For information about file format
see securenet(5).
Before the author of this server had seen securenet(5) another format was implemented ypserv.acl(5). This file format makes it possible to
allow and deny hosts and networks access to the server. This file can have any name since it's given by the argument to -a (use full path).
The file used can be reread by sending a SIGHUP to ypserv. The process pid can be found in the file /var/run/ypserv.pid
If a host isn't secure all queries to the server will result in a YP_NODOM result.
If the file /var/yp/ypserv.log exists then messages will be written to the file.
If a directory named the same as the system domainname exists in /var/yp/ (ie. the domainname is foo and directory /var/yp/foo exists), then
ypserv will be automatically started at boot time.
The options are as follows:
-1 Allow ypserv to answer old YP version 1 requests.
-a aclfile
Don't use /var/yp/securenet. Use another file with another file format. For futher information see man page for ypserv.acl.
-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 suc-
cessful. Alternately, if these maps were built on the YP master using makedbm -b then DNS queries will be done without needing to
specify -d.
-x Terminate the server after processing aclfile or /var/yp/securenet.
FILES
/var/yp/ypserv.log
/var/yp/securenet
/var/run/ypserv.pid
SEE ALSO
yp(8), ypserv.acl(5), securenet(5), ypbind(1)
AUTHOR
Mats O Jansson <moj@stacken.kth.se>
BSD
June 27, 1994 BSD