The SecureTTY account management component
returns failure if the user is attempting to authenticate as superuser,
and the process is attached to an insecure TTY.
In all other cases, the module returns success.
A TTY is considered secure if it is listed in
and has the
The following options may be passed to the authentication module:
debugging information at
suppress warning messages to the user.
These messages include
reasons why the user's
authentication attempt was declined.