SECURETTY(5)

NAME
       securetty  - file which lists ttys from which root can log
       in

DESCRIPTION
       /etc/securetty is used by login(1); the file contains  the
       device  names  of tty lines (one per line, without leading
       /dev/) on which root is allowed to login.

FILES
       /etc/securetty

SEE ALSO
       login(1)