Describe the purpose of a secure baseline configuration for OT devices and how you would enforce it.

Describe the purpose of a secure baseline configuration for OT devices and how you would enforce it.

• A. Baselines are optional guidelines; enforcement is not necessary.
• B. Baselines reduce misconfigurations and known weaknesses; enforce via automated configuration management, periodic hardening checks, and non-compliant device remediation workflows.
• C. Baselines only apply to IT devices.
• D. Baselines are implemented manually with no automation.

Answer: (B)

A secure baseline configuration for OT devices defines a known, hardened setup that all devices should follow. This minimizes risks by specifying which services and features are enabled, which protocols are allowed, credentials are changed from defaults, patches are applied, and monitoring is in place. With a consistent baseline, you reduce the chance of drift that creates gaps for exploitation and you can quickly detect when a device departs from the safe state. Enforcing the baseline relies on three pillars. First, automated configuration management continuously pushes the approved baseline and records each device’s actual configuration, making it easy to see deviations. Second, periodic hardening checks compare current configurations to the baseline, producing actionable reports on non-compliant devices. Third, remediation workflows address drift by automatically or semi-automatically bringing devices back into compliance, whether through automated fixes, guided manual adjustments, or isolating non-compliant devices until they can be updated safely. In OT, automation is essential for scalability, but it must be implemented within proper change-control processes and with safety considerations to avoid impacting operations. Regular updates to the baseline, versioning, and testing help ensure the baseline remains effective against evolving threats.

A secure baseline configuration for OT devices defines a known, hardened setup that all devices should follow. This minimizes risks by specifying which services and features are enabled, which protocols are allowed, credentials are changed from defaults, patches are applied, and monitoring is in place. With a consistent baseline, you reduce the chance of drift that creates gaps for exploitation and you can quickly detect when a device departs from the safe state.

Enforcing the baseline relies on three pillars. First, automated configuration management continuously pushes the approved baseline and records each device’s actual configuration, making it easy to see deviations. Second, periodic hardening checks compare current configurations to the baseline, producing actionable reports on non-compliant devices. Third, remediation workflows address drift by automatically or semi-automatically bringing devices back into compliance, whether through automated fixes, guided manual adjustments, or isolating non-compliant devices until they can be updated safely. In OT, automation is essential for scalability, but it must be implemented within proper change-control processes and with safety considerations to avoid impacting operations. Regular updates to the baseline, versioning, and testing help ensure the baseline remains effective against evolving threats.