Difference between revisions of "NIS"

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[[Category:Security (English)]]
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[[Category:Security]]
 
{{stub}}
 
{{stub}}
=Introduction=
 
  
 
NIS is a protocol developed by Sun to allow one to defer user authentication to a server. The server software is in the ypserv package, and the client software is in the yp-tools package. ypbind-mt is also available, which is a multi threaded version of the client daemon.
 
NIS is a protocol developed by Sun to allow one to defer user authentication to a server. The server software is in the ypserv package, and the client software is in the yp-tools package. ypbind-mt is also available, which is a multi threaded version of the client daemon.
  
'''Note:''' obviously this article is far from finished. hopefully in the future that will change, but in the meantime check the [[NIS#More resources|More resources section]].
+
{{note|Obviously this article is far from finished. hopefully in the future that will change, but in the meantime check the [[NIS#More resources|More resources section]].}}
  
==How to set up a NIS client==
+
== NIS Client ==
  
 
The first step is to install the tools that you need. This provides the configuration files and general tools needed to use NIS.
 
The first step is to install the tools that you need. This provides the configuration files and general tools needed to use NIS.
 
 
  # pacman -S yp-tools ypbind-mt
 
  # pacman -S yp-tools ypbind-mt
  
Line 16: Line 14:
  
 
Now edit the /etc/yp.conf file and add your ypserver or nis server.
 
Now edit the /etc/yp.conf file and add your ypserver or nis server.
 
 
  ypserver your.nis.server
 
  ypserver your.nis.server
  
 
Start the rpcbind and ypbind daemons (add them to your [[rc.conf]] file if you want it to start automatically).
 
Start the rpcbind and ypbind daemons (add them to your [[rc.conf]] file if you want it to start automatically).
 
 
  # /etc/rc.d/rpcbind start
 
  # /etc/rc.d/rpcbind start
 
  # /etc/rc.d/ypbind start
 
  # /etc/rc.d/ypbind start
  
 
To test the setup so far you can run the command yptest:
 
To test the setup so far you can run the command yptest:
 
 
  # yptest
 
  # yptest
  
Line 31: Line 26:
  
 
To actually use NIS to log in you have to edit /etc/nsswitch.conf.  Modify the lines for passwd, group and shadow to read:
 
To actually use NIS to log in you have to edit /etc/nsswitch.conf.  Modify the lines for passwd, group and shadow to read:
 
 
  passwd: files nis
 
  passwd: files nis
 
  group: files nis
 
  group: files nis
Line 42: Line 36:
 
See [http://www.tldp.org/HOWTO/NIS-HOWTO/settingup_client.html section 7 of The Linux NIS HOWTO] for further information on configuring NIS clients.
 
See [http://www.tldp.org/HOWTO/NIS-HOWTO/settingup_client.html section 7 of The Linux NIS HOWTO] for further information on configuring NIS clients.
  
==How to set up a NIS server==
+
== NIS Server ==
  
 +
== Install Packages ==
 
Make sure packages ypbind-mt, ypserv, and yp-tools are installed:
 
Make sure packages ypbind-mt, ypserv, and yp-tools are installed:
 +
# pacman -S ypbind-mt yp-tools ypserv
  
# sudo pacman -S ypbind-mt yp-tools ypserv
+
== Configuration ==
 +
 
 +
=== /etc/conf.d/nisdomainname ===
  
 
Add the domain name to /etc/conf.d/nisdomainname:
 
Add the domain name to /etc/conf.d/nisdomainname:
  
# NISDOMAINNAME="nis-domain-name"
+
# NISDOMAINNAME="nis-domain-name"
 +
 
 +
=== /etc/ypserv.conf ===
  
 
Add rules to /etc/ypserv.conf for your your nis clients of this form:
 
Add rules to /etc/ypserv.conf for your your nis clients of this form:
  
# ip-address-of-client : nis-domain-name : rule : security
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# ip-address-of-client : nis-domain-name : rule : security
  
 
For example:
 
For example:
  
# 192.168. : home-domain : * : port
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# 192.168. : home-domain : * : port
  
For more information see `man ypserv.conf`.
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For more information see {{ic|man ypserv.conf}}.
 +
 
 +
=== /var/yp/Makefile ===
  
 
Add or remove files you would like NIS to use to /var/yp/Makefile under the "all" rule.
 
Add or remove files you would like NIS to use to /var/yp/Makefile under the "all" rule.
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Default:
 
Default:
  
# all:  passwd group hosts rpc services netid protocols netgrp \
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# all:  passwd group hosts rpc services netid protocols netgrp \
#        shadow # publickey networks ethers bootparams printcap mail \
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#        shadow # publickey networks ethers bootparams printcap mail \
#        # amd.home auto.master auto.home auto.local passwd.adjunct \
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#        # amd.home auto.master auto.home auto.local passwd.adjunct \
#        # timezone locale netmasks
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#        # timezone locale netmasks
 +
 
 +
Due to recent changes in networking in Archlinux you have to change the line:
 +
 
 +
# LOCALDOMAIN = `/bin/domainname`
 +
 
 +
to
 +
 
 +
# LOCALDOMAIN = `/bin/hostname -d`
 +
 
 +
After that you have to build your NIS database:
 +
 
 +
# cd /var/yp
 +
# make
 +
 
 +
=== /var/yp/securenets ===
  
 
Add rules to /var/yp/securenets to restrict access:
 
Add rules to /var/yp/securenets to restrict access:
  
# 255.255.0.0 192.168.0.0 # Gives access to anyone in 192.168.0.0/16
+
# 255.255.0.0 192.168.0.0 # Gives access to anyone in 192.168.0.0/16
  
 
Be sure to comment out this line, as it gives access to anyone.
 
Be sure to comment out this line, as it gives access to anyone.
  
# 0.0.0.0      0.0.0.0
+
# 0.0.0.0      0.0.0.0
 +
 
 +
=== /var/yp/ypservers ===
  
 
Add the domain name of your server to /var/yp/ypservers:
 
Add the domain name of your server to /var/yp/ypservers:
  
# my.nis.server
+
# your.nis.server
 +
 
 +
== Start NIS Daemons ==
 +
=== initscripts ===
 +
{{note|The daemons MUST be started in this order.}}
 +
 
 +
Start rpcbind if it isn't already started:
 +
# rc.d start rpcbind
 +
 
 +
Start ypbind:
 +
# rc.d start ypbind
 +
 
 +
Start ypserv:
 +
# rc.d start ypserv
 +
 
 +
If you want these to start automatically on startup, add them to your DAEMONS array in rc.conf:
 +
DAEMONS=(... rpcbind ypbind ypserv ...)
 +
 
 +
Make sure they go after network in the array.
 +
 
 +
=== systemd ===
 +
Simply use the systemctl command to enable and start the ypbind service:
 +
# systemctl enable ypbind.service
  
==More resources==
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== More resources ==
 
*[http://www.tldp.org/HOWTO/NIS-HOWTO/ The Linux NIS HOWTO],very helpful and generally applicable to Arch Linux.
 
*[http://www.tldp.org/HOWTO/NIS-HOWTO/ The Linux NIS HOWTO],very helpful and generally applicable to Arch Linux.
 
*[http://www.yolinux.com/TUTORIALS/NIS.html YoLinux NIS tutorial]
 
*[http://www.yolinux.com/TUTORIALS/NIS.html YoLinux NIS tutorial]
 
*[http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch30_:_Configuring_NIS Quick HOWTO, Configuring NIS]
 
*[http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch30_:_Configuring_NIS Quick HOWTO, Configuring NIS]

Revision as of 09:02, 3 November 2012

Tango-document-new.pngThis article is a stub.Tango-document-new.png

Notes: please use the first argument of the template to provide more detailed indications. (Discuss in Talk:NIS#)

NIS is a protocol developed by Sun to allow one to defer user authentication to a server. The server software is in the ypserv package, and the client software is in the yp-tools package. ypbind-mt is also available, which is a multi threaded version of the client daemon.

Note: Obviously this article is far from finished. hopefully in the future that will change, but in the meantime check the More resources section.

NIS Client

The first step is to install the tools that you need. This provides the configuration files and general tools needed to use NIS.

# pacman -S yp-tools ypbind-mt

Next put your NIS domain name into the file /etc/conf.d/nisdomainname.

Now edit the /etc/yp.conf file and add your ypserver or nis server.

ypserver your.nis.server

Start the rpcbind and ypbind daemons (add them to your rc.conf file if you want it to start automatically).

# /etc/rc.d/rpcbind start
# /etc/rc.d/ypbind start

To test the setup so far you can run the command yptest:

# yptest

If it works you will, among other things, see the contents of the NIS user database (which is printed in the same format as /etc/passwd).

To actually use NIS to log in you have to edit /etc/nsswitch.conf. Modify the lines for passwd, group and shadow to read:

passwd: files nis
group: files nis
shadow: files nis

And then do not forget

# /etc/rc.d/ypbind restart

See section 7 of The Linux NIS HOWTO for further information on configuring NIS clients.

NIS Server

Install Packages

Make sure packages ypbind-mt, ypserv, and yp-tools are installed:

# pacman -S ypbind-mt yp-tools ypserv

Configuration

/etc/conf.d/nisdomainname

Add the domain name to /etc/conf.d/nisdomainname:

# NISDOMAINNAME="nis-domain-name"

/etc/ypserv.conf

Add rules to /etc/ypserv.conf for your your nis clients of this form:

# ip-address-of-client : nis-domain-name : rule : security

For example:

# 192.168. : home-domain : * : port

For more information see man ypserv.conf.

/var/yp/Makefile

Add or remove files you would like NIS to use to /var/yp/Makefile under the "all" rule.

Default:

# all:  passwd group hosts rpc services netid protocols netgrp \
#         shadow # publickey networks ethers bootparams printcap mail \
#         # amd.home auto.master auto.home auto.local passwd.adjunct \
#         # timezone locale netmasks

Due to recent changes in networking in Archlinux you have to change the line:

# LOCALDOMAIN = `/bin/domainname`

to

# LOCALDOMAIN = `/bin/hostname -d`

After that you have to build your NIS database:

# cd /var/yp
# make

/var/yp/securenets

Add rules to /var/yp/securenets to restrict access:

# 255.255.0.0 192.168.0.0 # Gives access to anyone in 192.168.0.0/16

Be sure to comment out this line, as it gives access to anyone.

# 0.0.0.0      0.0.0.0

/var/yp/ypservers

Add the domain name of your server to /var/yp/ypservers:

# your.nis.server

Start NIS Daemons

initscripts

Note: The daemons MUST be started in this order.

Start rpcbind if it isn't already started:

# rc.d start rpcbind

Start ypbind:

# rc.d start ypbind

Start ypserv:

# rc.d start ypserv

If you want these to start automatically on startup, add them to your DAEMONS array in rc.conf:

DAEMONS=(... rpcbind ypbind ypserv ...)

Make sure they go after network in the array.

systemd

Simply use the systemctl command to enable and start the ypbind service:

# systemctl enable ypbind.service

More resources