IT media MONOist Employee-written article: Introduction to Ethernet for Factories

Our company employee is currently writing a series of articles for the IT media MONOist. In this series, we carefully explain the fundamental knowledge and considerations necessary for the introduction of industrial Ethernet in next-generation factories aimed at Industry 4.0 and IoT for factories. We hope you will take a look.

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This time, we will introduce how to enhance security using the functions of Ethernet switches from the perspective of "protecting computers such as PLCs and SCADA in the factory from unauthorized access." It is important to note that if this security function is not properly configured, even expensive security products may not be effective.
This time, we will explain the "basic network functions" while focusing on the differences between hubs and switches used in industrial Ethernet.
This time, we will introduce the rules regarding IP addresses and MAC addresses that are also necessary for industrial Ethernet.
This time, we will introduce the differences between "Ethernet," which is commonly used, and "Industrial Ethernet," which is used in industrial applications. Please take a look.
In the first installment, as an entry point for the entire series, we will discuss the theme of "why we need to consider networks in factories," incorporating actual examples to explain the issues of networks in factories and the background of the spread of industrial Ethernet.