OpenLDAP 1.2.x
サーバの設定 sample slapd.conf

  include /etc/openldap/slapd.at.conf
  include /etc/openldap/slapd.oc.conf
  include /etc/openldap/nis.at.conf
  include /etc/openldap/nis.oc.conf

  schemacheck off
  referral ldap://ldap.four11.com
  pidfile /var/run/slapd.pid
  loglevel 0
  
  database ldbm
  suffix "dc=example,dc=com"
  directory "/var/lib/openldap"
  lastmod on

  defaultaccess read
  access to attribute=userPassword
    by dn="cn=admin,ou=People,dc=example,dc=com" write
    by self write
    by * none
  access to *
    by dn="cn=admin,ou=People,dc=example,dc=com" write