D-Link NetDefend DFL-CP310 User Manual page 405

The Ports page appears.
3. In the RS232 drop-down list, select Console.
4. Click Apply.
You can now control the NetDefend firewall from the serial console.
For information on all supported commands, refer to the NetDefend CLI
Reference Guide.
Chapter 14: Maintenance
Controlling the Appliance via the Command Line
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