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ISA/IEC-62443
ISA/IEC-62443 is a series of standards, technical reports, and related information that define procedures for implementing electronically secure Industrial Automation and Control Systems (IACS). This guidance applies tend-users (i.e., asset owners), system integrators, security practitioners, and control systems manufacturers responsible for manufacturing, designing, implementing, or managing IACS systems.
IEC 62443-4-2 Foundational Requirements
IEC 62443 FR - Restricted Data Flow (RDF)

Version Information
Release Notes, Update information, Certifications and Frequently Asked Questions.
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- Release Notes Version 3.20
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- Product Certifications
  Certificates held by ETM – A Siemens Company.
  - ISA/IEC-62443
    ISA/IEC-62443 is a series of standards, technical reports, and related information that define procedures for implementing electronically secure Industrial Automation and Control Systems (IACS). This guidance applies tend-users (i.e., asset owners), system integrators, security practitioners, and control systems manufacturers responsible for manufacturing, designing, implementing, or managing IACS systems.
    - WinCC OA IEC 62443 Certification
      No. IITS2 001934 0002 Rev. 00
    - IEC 62443-4-2 Foundational Requirements
  - IEC 61508
    IEC 61508 is the international standard that defines functional safety requirements for systems involving electrical, electronic, or programmable electronic technologies.
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  A collection of common customer questions
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IEC 62443 FR - Restricted Data Flow (RDF)


ID	Title	Verdict
CR 5.1	Network segmentation	Component
NDR 5.2	Zone boundary protection	Not Applicable
NDR 5.2 RE1	Deny all, permit by exception	Not Applicable
NDR 5.2 RE2	Island mode	Not Applicable
NDR 5.2 RE3	Fail close	Not Applicable
NDR 5.3	General-purpose person-to-person communication restrictions	Not Applicable