openVPN ldap auth Active directory

i plan to use ipfire/openVPN with LDAP auth. (Active directory).
but there is not much info around.
i found only
(use basic_ldap_auth from squid)

Any idea what i should do?

Hi Anton,
did you find a solution and got it working?

no, not with ipfire
(we use now pfsense for openvpn with actie directory user authentication)
But for ipsec tunnels we use ipfire!!