ultrix man page for screenmode

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

Name
       screenmode - enable or disable gateway screening

Syntax
       /usr/etc/screenmode [ on | off ]

Description
       The  command enables or disables gateway screening if the argument is on or off, respectively.  See the reference page for more information
       on gateway screening.

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

       In order to avoid packets being forwarded before the program has been started, 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.

Restrictions
       If is running and then screening is disabled, the daemon might (but might not) exit.

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

See Also
       screen(2), screend(8), screenstat(8)

																     screenmode(8)