Numerical control machine communication interface security protection method and device

Abstract

The invention provides a numerical control machine communication interface security protection method and device. The method comprises the steps that access monitoring is conducted on a peripheral interface needing access control in a numerical control machine; equipment to be accessing the numerical control machine all conduct access through access monitoring, wherein the specific control methodof access monitoring comprises the steps that identities of the access equipment are authenticated, and access is allowed only when the identities pass authentication; upload files are supplied to thenumerical control machine for use by means of caching of access monitoring; download files are acquired through a WEB page of access monitoring; and all operations of the access equipment are recorded. Accordingly, the communication data security of a numerical control system is effectively protected, abnormal data streams are prevented from flowing into the numerical control system, all networkattacks and illegal data theft behaviors which are conducted by means of the numerical control system are blocked, and normal and secure operation of the numerical control system and a numerical control machining network is guaranteed.

Description

technical field [0001] The invention relates to a safety protection device and method for a communication interface of a numerical control machine tool in the field of communication safety. Background technique [0002] With the continuous advancement of "integration of industrialization and industrialization", more and more network technologies and control technologies are applied to intelligent manufacturing, and industrial control systems have been widely used in intelligent manufacturing. Manufacturing capacity plays a very important role. However, most of the domestic industrial control systems currently use foreign products and technologies, and adopt closed measures for domestic users, resulting in the security of key infrastructure being controlled by others; on the other hand, industrial network attacks and intrusions represented by "Stuxnet" are not uncommon. , Bringing huge losses, it also sounded the alarm for the intelligent manufacturing industry. Therefore, t...

AI Technical Summary

Problems solved by technology

[0006] At present, the DNC system lacks control means for file transfer, and there are potential safety hazards that confidential documents and materials can be directly transferred to CNC machine tools through the DNC system;

[0007] There is no supervision and auditing of the internal communication of the DNC processing network, and there are hidden dangers in the security of the DNC network;

[0008] Although the problem has been exposed, there is currently no effective security protection method for various peripheral interfaces of CNC machine tools, especially the Universal Serial Interface (USB).

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