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Industrial Cybersecurity

You're reading from   Industrial Cybersecurity Efficiently secure critical infrastructure systems

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Product type Paperback
Published in Oct 2017
Publisher Packt
ISBN-13 9781788395151
Length 456 pages
Edition 1st Edition
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Author (1):
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Pascal Ackerman Pascal Ackerman
Author Profile Icon Pascal Ackerman
Pascal Ackerman
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Toc

Table of Contents (13) Chapters Close

Preface 1. Industrial Control Systems 2. Insecure by Inheritance FREE CHAPTER 3. Anatomy of an ICS Attack Scenario 4. Industrial Control System Risk Assessment 5. The Purdue Model and a Converged Plantwide Ethernet 6. The Defense-in-depth Model 7. Physical ICS Security 8. ICS Network Security 9. ICS Computer Security 10. ICS Application Security 11. ICS Device Security 12. The ICS Cybersecurity Program Development Process

Segregation exercise


Absolute adherence to the bubble model will theoretically guarantee the integrity and security of any system in the secured area. In practice though, this can become a daunting task, especially as the size of the secured area increases. To make the task at hand more manageable, one must carefully determine what systems should go into the secured area (the CPwE-defined manufacturing zone) and which should stay out (placed in the enterprise zone).

As a rule of thumb, systems that cannot be secured by conventional strategies, such as patching and Antivirus deployment, should be placed in the manufacturing zone. For the remaining systems, it should be determined whether placing them in the enterprise zone versus the manufacturing zone has an adverse effect on the operability of the ICS or the amount of traffic to flow through the conduit (IDMZ), which dictates whether that system is to be placed in the manufacturing zone or the enterprise zone:

As an example, consider an ICS...

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