Create OpenLDAP Global Addressbook on CentOS 7 - CentLinux

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Sunday, 10 June 2018

Create OpenLDAP Global Addressbook on CentOS 7

Create OpenLDAP Global Addressbook on CentOS 7

Global Addressbook is a central database where users can search for email addresses, telephone numbers, addresses, etc. In this post, we will create a Global Addressbook with OpenLDAP 2.4 Server and access it through Mozilla Tunderbird.

We have already configured a LDAP Server. Therefore, I am skipping the steps of configuring a LDAP Server. However, if you missed it then please follow my previous post “Configure Remote Authentication Server using OpenLDAP 2.4”.

 

This Article Provides:

     

    System Specification:

    The Same Server that I used in my previous posts “Configure Remote Authentication Server using OpenLDAP 2.4” and “OpenLDAP Administration using phpLDAPAdmin”.

     

    Create OpenLDAP Address Book on CentOS 7:

    Checkout the current structure of our LDAP Directory via phpLDAPAdmin console i.e. http://ldapserver.itlab.com/phpldapadmin

    image

    We must add the inetorgperson schema to our LDAP Directory, because we require its objectclasses for our Addressbook entries.

    Note: Since I am working on a already configured LDAP Server, therefore I am not adding other core schemas. However, if you are configuring the LDAP Server from scratch, then you must add the cosine schema as well.

    [root@ldapserver ~]# ldapadd -Y EXTERNAL -H ldapi:/// -D "cn=config" -f /etc/openldap/schema/inetorgperson.ldif SASL/EXTERNAL authentication started
    SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
    SASL SSF: 0
    adding new entry "cn=inetorgperson,cn=schema,cn=config"

    Let’s create the organizationUnit and add some entries therein.

    [root@ldapserver ~]# cd ~/ldap
    [root@ldapserver ldap]# cat > addressbook.ldif << EOF
    > dn: ou=AddressBook,dc=itlab,dc=com
    > objectClass: organizationalUnit
    > ou: AddressBook
    >
    > dn: cn=Ahmer Mansoor,ou=AddressBook,dc=itlab,dc=com
    > cn: Ahmer Mansoor
    > gn: Ahmer
    > sn: Mansoor
    > mail: ahmer@itlab.com
    > objectClass: top
    > objectClass: inetOrgPerson
    >
    > dn: cn=Muhammad Ali,ou=AddressBook,dc=itlab,dc=com
    > cn: Muhammad Ali
    > gn: Muhammad
    > sn: Ali
    > mail: m_ali@itlab.com
    > objectClass: top
    > objectClass: inetOrgPerson
    >
    > dn: cn=Waseem Hussain,ou=AddressBook,dc=itlab,dc=com
    > cn: Waseem Hussain
    > gn: Waseem
    > sn: Hussain
    > mail: waseem@itlab.com
    > objectClass: top
    > objectClass: inetOrgPerson
    >
    > dn: cn=Ashfaq Khan,ou=AddressBook,dc=itlab,dc=com
    > cn: Ashfaq Khan
    > gn: Ashfaq
    > sn: Khan
    > mail: ashfaq@itlab.com
    > objectClass: top
    > objectClass: inetOrgPerson
    > EOF

    [root@ldapserver ldap]# ldapadd -x -W -D "cn=ldapadm,dc=itlab,dc=com" -f addressbook.ldif
    Enter LDAP Password:
    adding new entry "ou=AddressBook,dc=itlab,dc=com"

    adding new entry "cn=Ahmer Mansoor,ou=AddressBook,dc=itlab,dc=com"

    adding new entry "cn=Muhammad Ali,ou=AddressBook,dc=itlab,dc=com"

    adding new entry "cn=Waseem Hussain,ou=AddressBook,dc=itlab,dc=com"

    adding new entry "cn=Ashfaq Khan,ou=AddressBook,dc=itlab,dc=com"

    Now, take a look at our LDAP Directory.

    image

    We can add as much entries as we like in the same way. However, for the sake of demonstration, I am adding only 4 entries.

     

    Configure Mozilla Thunderbird to use OpenLDAP Addressbook:

    Now our Global Addressbook is configured successfully. Let’s use it in an email client. I am demonstrating it using Mozilla Thunderbird.

    image

    Because it is out of scope to configure an email account, therefore, I am skipping it. Click on Addressbook button at toolbar.

    image

    Go to File > New > LDAP Directory.

    image

    Add our LDAP Directory as follows:

    image

    Now, our Global Addressbook has been added in Thunderbird.

    imageimage

    Our OpenLDAP Global Addressbook has been configured successfully.

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