screenmode(8)
Name
screenmode − enable or disable gateway screening
Syntax
/usr/etc/screenmode [ on | off ]
Description
The screenmode command enables or disables gateway screening if the argument is on or off, respectively. See the screen() 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.
Restrictions
If screend 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.