my config

$g_allow_signup         = OFF;

$g_login_method             = MD5;

$g_ldap_server          = 'ldap://ldapserver:389/';

$g_ldap_port            = 389;

$g_ldap_root_dn         = '';

$g_ldap_organization    = '';

$g_ldap_uid_field       = 'uid';

$g_ldap_realname_field  = 'cn';

$g_ldap_bind_dn         = '';

$g_ldap_bind_passwd     = '';

$g_use_ldap_email       = ON;

$g_use_ldap_realname    = ON;

$g_ldap_protocol_version = 3;

$g_ldap_follow_referrals = ON;

$g_ldap_simulation_file_path = '';