NIS(Network Information Service)

NIS(Network Information Service)

NIS is also called as YP. YP stands for Yellow Pages.

An NIS maintains a central directory of user and group information,hostname etc ina computer network

Server Configuration

Service Profile

Packages:ypserv,ypbind,yptools

Configuration file;/var/yp/Makefile

Daemon:ypserv,yppassdd

Portnumbers:NIS uses random port numbers

Install the packages

[root@nisserver~]#yum install ypserve* -y

[root@nisserver~]#yum install ypbind* -y

[root@nisserver~]#yum install yptool* -y

Set the NISDOMAIN in the /etc/sysconfig/network file as shown below.

[root@nisserver~]# vi /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=Raju

GATEWAY=192.168.0.254

NISDOMAIN=raju.com

 [root@nisserver~]# vi /etc/sysconfig/authconfig

USENIS=YES

 Create the database

To create the database execute the following command and type yes

[root@nisserver~]#/usr/lib/yp/ypinit –m 

[root@nisserver~]#ls –l /var/yp  #will list the  created databases

Edit the configuration file

[root@nisserver yp~]#make #to update database

 Edit main configuration file

[root@nisserver~]# vi /var/yp/Makefile

NOPUSH=false

MERGE_PASSWD=false

 Start the services

[root@nisserver~]#Service ypserve restart

[root@nisserver~]#Service yppasswdd restart

[root@nisserver~]#Service portmap restart

[root@nisserver~]#Service nfs restart

[root@nisserver~]#Service ypbind restart

[root@nisserver~]#Service ypxfrd restart

Note:Configure nfs with NIS to provide users home directory in client machine they logged in

Client Configuration

[root@nisclient~]# vi /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=Koti

GATEWAY=192.168.0.1

NISDOMAIN=raju.com

 Install ypbind package

[root@nisclient~]#yum installypbind* -y

[root@nisclient~]#service ypbind restart

[root@nisclient~]#system-config-authentication

Select  Use NIS

                [OK]

Select

   Domanin=>raju.com

  Server=>192.168.0.254

To configure a Windows client

Download the pGina plug-in for windows and install it.

·         Select Start ->Programs->pGina->Configuration Tool to run the pGina configuration tool.

·         Then click on  "Plugin" tab and click "Browse." Enter the path to the .dll that you just installed that performs the NIS function. The default location is c:\pGina\plugins\NISplugin.dll

·         Then on the "Plugin" tab, click the "Configure" button. In the dialog box named, appropriately, "Dialog," enter the name of your NIS domain (raju.com in the example).

·         You'll also see a text box in which to enter the "Password Map" file. Enter passwd.byname. This is the table in NIS that is used when you pass in a username at logon time.

·         At the "Dialog" dialog box, click "Save." At the "pGina Configuration" window, click "OK."

·         Reboot the client machine to save the settings.

·         After reboot we will find pGina login as shown below