An architectural framework for describing Supervisory Control and Data Acquisition (SCADA) systems
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Authors
Ward, Michael P.
Subjects
Advisors
Irvine, Cynthia E.
Shiflett, Deborah S.
Date of Issue
2004-09
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Two recent trends have raised concerns about the security and stability of Supervisory Control and Data Acquisition (SCADA) systems. The first is a move to define standard interfaces and communications protocols in support of cross-vendor compatibility and modularity. The second is a move to connect nodes in a SCADA system to open networks such as the Internet. Recent failures of critical infrastructure SCADA systems highlight these concerns. To ensure continued operations in times of crisis, SCADA systems, particularly those operating in our critical infrastructure, must be secured. Developing an abstract generic framework for defining and understanding SCADA systems is a necessary first step. A framework can provide the tools to understand the system's functions and capabilities, and how components in the system relate and interface with each other. This thesis examines and describes SCADA systems, their components, and commonly used communications protocols. It presents a matrix approach to describing and defining the features, functions and capabilities of a SCADA system. Two small SCADA systems, using industry standard components and simulating real world applications, were designed and constructed for this thesis to provide context for applying the matrix approach.
Type
Thesis
Description
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
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NPS Report Number
Sponsors
Funder
Format
xviii, 102 p. : ill. (some col.) ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.