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Safety protection method and system for OPC protocol

A security protection and protocol technology, applied in transmission systems, electrical components, etc., can solve the problems of prolonged communication and low reliability

Active Publication Date: 2016-06-22
INSECTECH BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a security protection method and system for the OPC protocol to solve the problems of extended communication time and low reliability between existing industrial control systems

Method used

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  • Safety protection method and system for OPC protocol
  • Safety protection method and system for OPC protocol
  • Safety protection method and system for OPC protocol

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Embodiment Construction

[0077] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0078] It should be noted that, in the case of no conflict, the implementations in the present application and the features in the implementations can be combined with each other.

[0079] It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another e...

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Abstract

The invention provides a safety protection method and system for an object link and embedding for process control (OPC) protocol. The method comprises: TCP / IP layer protocol parsing is carried out on a TCP / IP message from an OPC client network port and a protocol type of the TCP / IP message as well as a client IP address and a server port number is determined; if the protocol type is a TCP protocol, whether the client IP address and the server port number are in a white list is determined, the TCP / IP message is allowed to be transmitted to an OPC server by the server port number or is abandoned at least according to a determination result, and a log record is generated; and if the protocol type is not a TCP protocol, the TCP protocol is abandoned and warning information and a log record are generated. According to the invention, functions of TCP-IP layer protocol filtering, client IP address filtering, and dynamic port checking are introduced, so that illegal access of an unauthorized client can be prevented effectively.

Description

technical field [0001] The invention relates to the technical field of industrial information, in particular to a method and system for security protection against the OPC protocol. Background technique [0002] In the field of industrial control, in order to realize the interoperability between the application software and hardware products of the industrial control system, it is necessary to solve the problems of system integration and data communication at the application level. To this end, an international organization called the OPC Foundation was established internationally to formulate the OPC standard. OPC is the abbreviation of ObjectLinkingandEmbeddingforProcessControl. It defines a set of interface specifications, including OPC Automation Interface (AutomationInterface) and Customization Interface ( CustomInterface), the essence is to establish a complete set of interface rules between hardware suppliers and software developers. As long as this set of rules is fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L63/0236H04L63/101H04L63/123H04L63/1441H04L69/163H04L69/22H04L69/26
Inventor 陈惠欣
Owner INSECTECH BEIJING CO LTD
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