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MOD Functions | Firewall
20
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
20.13 Firewall
Application
You can set up a firewall for the primary network interface of the
control. It can be configured so that incoming network traffic is
blocked and/or a message is displayed, depending on the sender
and the service. The firewall cannot be started for the second
network interface of the control if it is active as the DHCP server.
Once the firewall has been activated, a symbol appears at the
lower right in the taskbar. The symbol changes depending on the
safety level that the firewall was activated with, and informs about
the level of the safety settings:
Icon Meaning
Firewall protection does not yet exist
although it has been activated accord-
ing to the configuration. This can happen,
for example, if PC names for which there are
no equivalent IP addresses as yet were used
in the configuration.
Firewall active with medium security level
Firewall active with high safety level. (All
services except for the SSH are blocked)
Have your network specialist check and, if necessary,
change the standard settings.
The settings in the additional tab
SSH settings
are in
preparation for future enhancements and currently have
no function.
Configuring the firewall
Make your firewall settings as follows:
Use the mouse to open the task bar at the bottom edge of the
screen
Further information: "Window manager", page 107
Press the green HEIDENHAIN button to open the JH menu
Select the
Settings
menu item
Select the
Firewall
menu item.
HEIDENHAIN recommends activating the firewall with the
prepared default settings:
Set the
Active
option to enable the firewall
Press the
Set standard values
button to activate the default
settings recommended by HEIDENHAIN.
Exit the dialog with the
OK
button.