Programming the Radio
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PHOENIX CONTACT
4-11
To configure the radio parameters, click on “Configuration… LAN… Network Filter” in the
left navigation column.
Figure 4-9
“LAN - Network Filter Configuration” screen
The network filter allows features associated with a firewall to be implemented directly in the
radio. By filtering out traffic that is not intended for any of the end devices connected via the
radio link, the over-the-air bandwidth will be reserved for relevant data. In turn, this may
allow configuring the radio network to a lower over-the-air data rate which will improve
reception and/or improve range.
This feature is most commonly implemented on a master radio that may also be connected
to a PC with internet access. This prevents internet traffic from being broadcast over the
radio network. In some installations it may be desirable to enable it on a slave radio, if the
slave radio is connected to several end devices that may need to communicate directly to
one another.
To utilize the Network Filter, click the “Enable” button to begin setting rules to filter traffic.
Packets can be blocked or allowed to pass based on the rules defined in the
Network Filter
Rule
section. After enabling the specified rule, click the “Submit Network Filter Rule” button.
It will then be possible to enter rules in the “Add Network Filter Rule” screen.
To log whenever a packet is blocked based on the rules, click the “Enable” button under
Network Filter Logging. Occurrences of a blocked packet will be logged in the System Log.
Note that only one entry is logged for all occurrences of a blocked packet per rule.
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