osf1 man page for screenmode

screenmode(8)						      System Manager's Manual						     screenmode(8)

NAME
       screenmode - Enable or disable gateway screening

SYNOPSIS
       /usr/sbin/screenmode [on | off]

DESCRIPTION
       The  screenmode command enables or disables gateway screening if the argument is on or off, respectively.  See the screen(2) reference page
       for more information on gateway screening.

       When no argument is supplied, screenmode indicates the state of gateway screening as on or off.

       In order to avoid packets being forwarded before the screend program has been started, screenmode should  be  run  before  configuring  any
       interfaces, other than the first interface on the system (which might be needed during the bootstrap sequence).

       Only the superuser can change the state.

NOTES
       If gateway screening is disabled while screend is running, the daemon might exit.

ERRORS
       If an unauthorized user tries to change the state, an error message is displayed.

SEE ALSO
       Commands: screend(8), screenstat(8)

       Functions: screen(2)

																     screenmode(8)