The following authentication methods are included:

• Using an Active Directory / Domain
• Using a Windows Server (Local or Remote)

Additions to the Account management:
With this extension, accounts in zFTPServer can be connected to Windows accounts. If applied to users, it specifies certain account settings like login limits, bandwidth management, and special home directory contents. If applied to groups, it specifies defaults to all users belonging to that Windows group, making management of thousands accounts a breeze.

Seamless authentication at login
Accounts and settings in zFTPServer always takes precedence and thus zFTPServer checks if the user...
... 1. exist as a regular account in zFTPServer?
... 2. exist as a Windows-connected account in zFTPServer?
... 3. pass Windows authentication?

After aquiring the relevant user data a regular login-attempt to the ftp server is performed. This means that restrictions and security settings can be specified in zFTPServer on accounts (users and groups) that are connected to Windows-accounts and thus effectively enforce all these powerful features of zFTPServer onto the Windows-accounts trying to login to the FTP server.

Group management works transparently with Windows Integration
Group management with hierarchical structures and multiple group memberships still apply to both user- and group-accounts in zFTPServer while using Windows Integration. In the same way as zFTPServer accounts can me member of multiple groups, the integration with Windows has the same power: If a Windows-user is a member of several Windows-groups, that user will receive resources and security settings from all the Windows-integrated groups in zFTPServer, making for instance the home directory for users loggin in to the FTP server a composite of, for instance, "Management", "Economy", and personal data.

Actually, the power of this extension goes way beyond anything currently on the market for FTP servers. Despite all this power, it is still a very elegant and easy to use solution.