screenmode.8

<B>Digital的Unix操作系统VAX 4.2源码</B>

.TH screenmode 8
.SH Name
screenmode \- enable or disable gateway screening
.SH Syntax
.B /usr/etc/screenmode
[
.B on
|
.B off
]
.SH Description
.NXR "screenmode command"
.NXR "gateway screening"
The
.PN screenmode
command enables or disables gateway screening 
if the argument is
.B on
or
.BR off ,
respectively.  See the 
.MS screen 2
reference page for more information on gateway screening.
.PP
When no argument is supplied,
.PN screenmode 
indicates the state of gateway screening as on or off.
.PP
In order to avoid packets being forwarded before the 
.PN screend 
program has been started,
.PN screenmode
should be run before configuring any interfaces,
other than the first interface on the system (which might be
needed during the bootstrap sequence).
.PP
Only the superuser can change the state.
.SH Restrictions
If
.PN screend 
is running and then screening is disabled, the daemon might
(but might not)
exit.
.SH Diagnostics
If an unauthorized user tries to change the state, an error
message is displayed.
.SH See Also
screen(2), screend(8), screenstat(8)