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<img src="http://img175.imageshack.us/img175/8835/authap0.jpg">

Back to Home Page ["BuildingALinuxDomain"]

Debian based system

This is a Client install for a Debian based system, to communicate with an LDAP Server.

Lets start off by addressing a bug that effects installs.

(bug #51315)

There is a current bug with the Ldap configuration that looks for the group nvram to correct this problem create the group nvram on the client machine.

                  addgroup --system nvram

Next install the required packages

                  aptitude install libnss-ldap libpam-ldap nscd
  • ldap-utils is an optional package (it can be used to query the ldap database remotely) libnss-ldap allows ldap to be used as a naming service libpam-ldap is used to authenticate users to ldap nscd is used to cache lookups so the ldap server wont be queried every time authentication is made.

Once the packages start being unpacked you will see these questions:

  • ldap server uniform


which is yourIP address / hostname of the LDAP server

  • Distinguished name of search base of your LDAP domain. ie: dc=my,dc=domain You'll be asked the version "Version 3" best in most cases.

    ldap account for root


enter your root account for ldap server with the dc=my,dc=domain

  • Enter root password Configure LIBNSS-LDAP OK On the next screen you'll be asked if you want to make root the DB admin...... "yes". Does the DB requires logging in, say "No" Next Root login account for LDAP. Typicaly: cn=manager,dc=my,dc=domain Then you'll need to enter the LDAP password for the LDAP account

Next we need to modify a couple different files

Files(libnss-ldap.conf, libnss-ldap.conf, /etc/libnss-ldap.secret, /etc/pam_ldap.conf and /etc/pam_ldap.secret)

== Should already have been configured during install of the packages, if an error was made double check theses files ==

#vi /etc/libnss-ldap.conf
  • (double check files)
  • host ldap


ensure ldap name or IP address is correct

  • base dc=debuntu,dc=local


again ensure they are set to your specifications from above.

  • rootbinddn cn=admin,dc=debuntu,dc=local

#vi /etc/libnss-ldap.secret

(ensure password correct)--


  • XXXXX

#vi /etc/pam_ldap.conf
  • (double check files)
  • host ldap base dc=debuntu,dc=local rootbinddn cn=admin,dc=debuntu,dc=local

#vi /etc/pam_ldap.secret

(ensure password correct)--


  • XXXXX

Will need to be configured

pam configuration files need to be modfied a bit like:

#vi /etc/pam.d/common-account }}}

  • account sufficient pam_ldap.so account required pam_unix.so

#vi /etc/pam.d/common-auth
  • auth sufficient pam_ldap.so auth required pam_unix.so nullok_secure

#vi /etc/pam.d/common-password
  • password sufficient pam_ldap.so password required pam_unix.so nullok obscure min=4 max=8 md5

#vi /etc/pam.d/common-session
  • session sufficient pam_ldap.so session required pam_unix.so

Finally, let's edit nsswitch so the system will be able to switch from local system authentication to ldap authentication.

# vim /etc/nsswitch.conf
  • passwd: files ldap group: files ldap shadow: files ldap

With everything entered correctly you should have a working LDAP Client :)

Fedora Client

The Fedora or redhat client is slightly easier.

                  /usr/bin/authconfig-tui

<img src="http://img175.imageshack.us/img175/8835/authap0.jpg">