yes, UDT supports logging in by AD credentials. You can choose a type of an acount (individual AD or AD Group account) when creating a new account in Settings -> Accounts...
I hope this helps
I know this document. But I have some issue
1. If my UDT Server is standalone server and doesn't join the domain. How can I search the domain\user ?
2. If this is LDAP. Where I can setup the LDAP Server IP ? I can't find it.