I use Active Directory auth through LDAP.
Using 0.16.2.7561
Here's what my config looks like.
'Observium Service' is a user in my AD for binding.I haven't tried to assign permissions to a group but I can try that later today, perhaps.
auth=>array(1)auth_ldap_version=>3auth_ldap_referrals=>0auth_ldap_server=>0=>tomie.threefifteen.infoauth_ldap_port=>389auth_ldap_starttls=>falseauth_ldap_recursive=>trueauth_ldap_recursive_maxdepth=>3auth_ldap_prefix=>CN=auth_ldap_suffix=>,CN=Users,DC=threefifteen,DC=infoauth_ldap_groupbase=>CN=Users,DC=threefifteen,DC=infoauth_ldap_binddn=>CN=Observium Service,CN=Users,DC=threefifteen,DC=infoauth_ldap_bindpw=>****************auth_ldap_bindanonymous=>falseauth_ldap_attr=>uid=>sAMAccountNameuidNumber=>objectSidcn=>namedn=>distinguishednameauth_ldap_objectclass=>personauth_ldap_groupmembertype=>fulldnauth_ldap_groupmemberattr=>member