Book Image

Industrial Cybersecurity

By : Pascal Ackerman
Book Image

Industrial Cybersecurity

By: Pascal Ackerman

Overview of this book

With industries expanding, cyber attacks have increased significantly. Understanding your control system’s vulnerabilities and learning techniques to defend critical infrastructure systems from cyber threats is increasingly important. With the help of real-world use cases, this book will teach you the methodologies and security measures necessary to protect critical infrastructure systems and will get you up to speed with identifying unique challenges.Industrial cybersecurity begins by introducing Industrial Control System (ICS) technology, including ICS architectures, communication media, and protocols. This is followed by a presentation on ICS (in) security. After presenting an ICS-related attack scenario, securing of the ICS is discussed, including topics such as network segmentation, defense-in-depth strategies, and protective solutions. Along with practical examples for protecting industrial control systems, this book details security assessments, risk management, and security program development. It also covers essential cybersecurity aspects, such as threat detection and access management. Topics related to endpoint hardening such as monitoring, updating, and anti-malware implementations are also discussed.
Table of Contents (19 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback

Modbus and Modbus TCP/IP

Introduced in 1979, Modbus has been the de facto standard ever since. Modbus is an application layer messaging protocol. Placed at level 7 of the OSI model, it provides client/server communication between devices connected via different types of communication buses or communication media. Modbus is the most widely used ICS protocol, mainly because it's a proven and reliable protocol, simple to implement, and open to use without any royalties:

On the left-hand side in the preceding figure, we see Modbus communicating over serial (RS-232 or RS-485). The same application layer protocol is used for communicating over Ethernet, as shown on the right-hand side.

The Modbus protocol is built upon a request and reply model. It uses Function Code in combination with a data section. The Function Code specifies which service is requested for or responded to and the data section provides the data that applies to the function. The Function Code and the data sections are specified...