Here is a summary
of important points about authentication.
You should set up username mappings so that VisionFS knows which Windows
usernames correspond to which UNIX users,
and/or use identical Windows and UNIX usernames.
If you're using another VisionFS server
to authenticate users by their UNIX passwords,
you need to set up username mappings on the authentication
server as well as this VisionFS server.
A user without a password on the authentication server is logged in with
guest permissions (that you define)
and the supplied password is ignored.
A user with a password on the authentication server is authenticated if
the supplied password matches the password in the appropriate database.
The VisionFS password database stores passwords (which are
case-insensitive) for Windows usernames.
With the UNIX password authentication method,
VisionFS applies any username mapping
before checking in the standard UNIX password database.
As UNIX passwords are case-sensitive,
but Windows sends case-insensitive passwords,
VisionFS allows for different capitalization of UNIX passwords.
A user is denied access if the supplied password doesn't match the
password in the appropriate database.