Enabling Anonymous Access for a FTP Site Configured with Isolate Users Using Active Directory Mode (IIS 6.0)
By default, anonymous access is disabled to sites created in Isolate users using Active Directory mode.
To enable anonymous access for the FTP site configured with Isolate users using Active Directory mode
When a site is created with Isolate Users Using Active Directory mode, the Path property of the root FTP virtual directory (which, for the other isolation modes identifies the home directory) is set empty. Also, the AccessFlags property of the root FTP virtual directory contains the AccessNoPhysicalDir flag. Do not alter these two values. If you change or remove them, further access to the site is not allowed.