Key words: CNC machine tool intelligent manufacturing Mecha Guardian industrial control security DNC protection full interface management

I. Introduction

“Industrial mother machine” undertakes the important mission of industrial modernization, is the key equipment in the field of intelligent manufacturing, but also the foundation of the goal of manufacturing power. Intelligent machine tools, CNC machine tools are widely used in the ten military industry, automobile manufacturing, 3C manufacturing and other fields, it plays a more and more important role in the development of some important industries of the national economy and people’s livelihood. With the vigorous promotion and development of the two integration policies, more and more information technology is applied to the field of industrial manufacturing, the production mode has changed, and the trend of network interconnection between CNC machine tools and systems is becoming more and more obvious. Numerical control processing industry also begins to promote the network of numerical control machine tools, speed up the numerical control network and the enterprise office network and Internet interconnection.

5SHY4045L0003 3BHB021400 3BHE019719R0101 GVC736BE101

5SHY4045L0003 3BHB021400 3BHE019719R0101 GVC736BE101

5SHY4045L0003 3BHB021400 3BHE019719R0101 GVC736BE101

The CNC system uses the special system customized by the manufacturer and does not consider the information security in the design. There are loopholes and backdoors in the design of the control software, communication protocol and management system running in the system. Using the security loopholes of the numerical control system can directly complete the control of the system, and can obtain the maximum control authority of the system. Especially after the CNC system is connected to the enterprise management network and the Internet, the risk of information security is increased sharply. It is urgent to establish a set of CNC machine tool security protection scheme system.

Ii. Network security risk analysis of “industrial mother-machine”

With the integration and development of the new generation of information technologies such as the Internet of Things, mobile Internet, big data and 5G, CNC machine tools are gradually interconnected with the office network, the Internet and the third party network, which breaks the original closed and trusted industrial production environment and thus faces threats such as viruses, trojans, hackers and hostile forces. Especially in recent years, ransomware attacks on industrial production enterprises have become more frequent, such as Wannacry blackmail of Taiwan Semiconductor Manufacturing in 2018 and Colonier, the largest pipeline operator of refined oil products in the United States, in May 2021. These security incidents indicate that industrial control systems themselves have security problems. Hackers, hostile forces and other threats to use these problems to attack the industrial production environment. The risks related to “industrial mother-machine” are summarized as follows.