Secure Access to the System

To secure access to the device by authorized users only, consider these options:

Password helps protect the source and execution of the control program
Remove the key from the controller
Implement physical barriers, such as locked cabinets

To secure access to the system, consider these options:

Follow industry best practices to harden your personal computers and servers, including anti-virus/anti-malware and application allow list solutions.
The recommendations are published at the Rockwell Automation technical support center in Knowledgebase Technote Rockwell Automation Customer Hardening Guidelines.
Develop and deploy backup and disaster recovery policies and procedures. Test backups on a regular schedule.
Minimize network exposure for all control system devices and systems, and confirm that they are not accessible from the Internet.
Locate control system networks and devices behind firewalls and isolate them from the business network.
Subscribe to the Knowledgebase Technote Security Advisory Index, so you have access to information about security matters that affect Rockwell Automation products.

Follow recommended network practices for products with network interfaces, such as communication ports or web servers. These practices help minimize risk or exposure by unauthorized activity or users. For more information, see:

Converged Plantwide Ethernet (CPwE) Design and Implementation Guide, publication ENET-TD001
EtherNet/IP Network Devices User Manual, publication ENET-UM006
Configure System Security Features User Manual, publication SECURE-UM001