We can disable the ports on the CompactRIO with the same method that we use to disable Ethernet cards on a Linux Desktop. This is using the "ifconfig" command in the Terminal.
- Open NI-MAX on another computer and navigate to your cRIO.
- Under System Settings, click the box next to "Enable Embedded UI". You will now be able to connect a keyboard to your cRIO's USB port and access the Linux Command Line.
- Access the terminal as an admin and run the following commands:
>> ifconfig ethX up
>> ifconfig ethX down
Replace "X" with 0 or 1 to designate which port you'd like to change. "up" and "down" enable and disable the Ethernet ports.