44 Rockwell Automation Publication 843ES-UM001A-EN-P - February 2020
Chapter 4 Add Device to an EtherNet/IP Network
Restrictions Imposed By Implicit Protected Mode
Implicit Protected mode prevents access to services that are not required after the
device is configured and in normal operation. Implicit Protected mode disables
features that can make the device vulnerable to disruptive actions. By doing so,
Implicit Protected mode helps to reduce the attack surface.
When it is in Implicit 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.
Perform Tasks When Not Restricted
If the device is in Implicit Protected mode and you attempt to perform any of the
restricted tasks, you are alerted that such a task cannot be performed because the
device is in Implicit Protected mode.
The following are example alerts that result from an attempt to set IP values on a
device when the device is in Implicit Protected mode:
• Studio 5000 Logix Designer® application
IMPORTANT Implicit Protected mode is not configurable.
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