Attributes are configured in /etc/freeradius/ladp.attrmap. This file maps RADIUS attributes to LDAP attributes. Samba has NT/LM password hashes. Hence, the default mapping for LM-Password and NT-Password must be changed.
checkItem User-Password userPassword. checkItem LMPassword sambaLMPassword checkItem NTPassword sambaNTPassword replyItem Tunnel-Type radiusTunnelType replyItem Tunnel-Medium-Type radiusTunnelMediumType replyItem Tunnel-Private-Group-Id radiusTunnelPrivateGroupId