Secure Network Design (NUREG/CR-7117, SAND2010-8222P)

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Publication Information

Manuscript Completed: January 2012
Date Published: June 2012

Prepared by:
John T. Michalski and Francis J. Wyant
Sandia National Laboratories
Albuquerque, New Mexico

Paul Rebstock, NRC Project Manager

NRC Job Code N6116

Prepared for:
Division of Engineering
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

This report describes elements of a secure digital nuclear power plant data network (NPPDN). These elements support the task of ensuring network security associated with the design, operation, and protection of the NPPDN. This report provides technical criteria concerning the features contributing to secure network designs at nuclear power plants. Regulatory guidance concerning the design and review of digital systems is provided in a variety of other resources, including Regulatory Guide (RG) 5.71, RG 1.152, DI&C-ISG-04, and Chapter 7 of the Standard Review Plan (NUREG-0800). The objective of this NUREG is not to consolidate or further explain that guidance, or to create new guidance, but rather to address technical considerations at the next level of detail. Although it does not supply explicit implementation guidance for 10 CFR 73.54, it will provide the reader information concerning criteria for supporting protection against cyber threats.