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Access control methods, device and equipment based on OPC (OLE for Process Control) protocol and memory medium

An access control and protocol technology, applied in the communication field, can solve problems such as OPC server attacks, and achieve high security assurance effects

Active Publication Date: 2019-04-16
HANGZHOU DPTECH TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the process of realizing the present invention, the inventor found that: in the prior art, only dynamic ports are tracked to perform port-level access control, but hackers can use dynamic ports to construct OPC packets with correct format to tamper with server data and perform Unauthorized operation, so that the OPC server and OPC client communication parties are attacked by some malicious software

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  • Access control methods, device and equipment based on OPC (OLE for Process Control) protocol and memory medium
  • Access control methods, device and equipment based on OPC (OLE for Process Control) protocol and memory medium
  • Access control methods, device and equipment based on OPC (OLE for Process Control) protocol and memory medium

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[0061] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0062] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as use...

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Abstract

The invention provides access control methods, device and equipment based on an OPC (OLE for Process Control) protocol and a memory medium. A method comprises the steps of obtaining an OPC request message sent by an OPC client to an OPC server; obtaining a semantic identifier and operand from a message header of the OPC request message after port legality of the OPC request message is determined;determining an OPC interface according to the semantic identifier and a pre-established binding information linked list, wherein the binding information linked list is used for storing a binding relationship between the semantic identifier and the OPC interfaces; determining an operation instruction of the OPC request message based on the OPC interface and the operand; and determining whether to permit the OPC request message or not based on the operation instruction and a preset access rule. An instruction level of access control over the OPC message is realized, and relatively high securityassurance for an OPC communication process is provided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an OPC protocol-based access control method, device, equipment and computer-readable storage medium. Background technique [0002] With the development of industrial process automation, automation system integration manufacturers hope to quickly integrate various software and hardware products from different manufacturers, and realize interoperability between different devices and systems. The emergence of OPC Classic solves the bottleneck problem of breaking through the "information island" of the control system. OPC Classic technology establishes a set of interface specifications that meet the requirements of industrial control, including OPC DA, OPC HDA, OPC A&E, OPC DX and other sub-protocols. OPC Classic seamlessly connects field signals with software such as SCADA and HMI according to a unified standard, and effectively separates hardware and application sof...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
CPCH04L61/2553H04L63/10H04L63/1466H04L69/22
Inventor 刘健康
Owner HANGZHOU DPTECH TECH
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