For our LDAP server we will be using the very flexible OpenLDAP Server (slapd).
# Install the software.
apt-get install slapd ldap-utils migrationtools
# Answer the on-screen prompts with:
Admin password: *****
Confirm password: *****
# We need to configure OpenLDAP now.
dpkg-reconfigure slapd
# Answer the on-screen prompts with:
No
DNS domain name: example.local
Name of your organization: example.local
Admin password: *****
Confirm password: *****
OK
BDB
No
Yes
No
# Restart OpenLDAP.
/etc/init.d/slapd restart

If you require help, contact SupportPRO Server Admin