Rockwell Automation Publication 5069-UM007A-EN-P - February 2019 9
Compact 5000 EtherNet/IP Adapter Features Chapter 1
Protected Mode
Protected Mode is a security enhancement that is automatically triggered as
soon as one of the following occur:
• The device bridges I/O connections.
• The device is a target of I/O connections.
Protected mode is a state where the device is operational, but has implemented
defenses against disruptive changes that would take the product out of service
for the process.
This security enhancement occurs on the I/O module level and helps prevent
unauthorized configuration changes that can affect system behavior and cause
unintended and unforeseen changes.
Enter and Exit Protected Mode
The device enters Protected Mode as soon as I/O connections are established
through the device. The device exits Protected Mode as soon as all I/O
connections through the device are stopped.
Restrictions Imposed By Protected Mode
Protected mode prevents access to services that are not required after the
device is configured and in normal operation. Protected mode disables features
that can make the device vulnerable to disruptive actions. By doing so,
Protected mode helps to reduce the attack surface.
When it is in Protected Mode, the device prevents execution of the
following tasks:
• Changing Ethernet configuration settings, such as port speed.
• Changing IP settings, such as IP address, mask, and DHCP mode.
•Updating the device firmware.
• Disabling or re-enabling external product ports.
• Performing remote resets.
IMPORTANT Protected mode is not configurable.
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