How to setup LDAP authentication in GLPI
GLPI ldap Auth
Login to GLPI through your favorite browser
Go to setup -> authentication
Click on LDAP , add
Enter the following details and click post
Name – my ldap server
Server – ip of ldap server (eg :192.168.1.1)
base dn – ou=people,dc=example,dc=com
surnamr – cn
comments- description
Save the settings.

Go to administration -> users
Click on LDAP link -> import new user -> import

This will import all the ldap users to glpi directory
It helped me a loooooot
Many thanks
Rafael