A method and apparatus for verifying an IEC 104 message

A technology of IEC104 and verification method, which is applied in the field of network communication, can solve the problems of multi-CPU resources, firewall consumption, slow speed, etc., and achieve the effects of low CPU usage, small network delay, and avoiding illegal message attacks

Active Publication Date: 2019-01-08
HANGZHOU DPTECH TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The proxy firewall can monitor the communication flow of the application layer by establishing a special proxy service prog

Method used

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  • A method and apparatus for verifying an IEC 104 message
  • A method and apparatus for verifying an IEC 104 message
  • A method and apparatus for verifying an IEC 104 message

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Embodiment Construction

[0024] In order for those skilled in the art to better understand the technical solutions in the embodiments of this specification, the technical solutions in the embodiments of this specification will be described in detail below in conjunction with the drawings in the embodiments of this specification. Obviously, the described implementation Examples are only some of the embodiments in this specification, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this specification shall fall within the scope of protection.

[0025] This manual provides an IEC104 message verification method, which is applied to the network equipment connected to the IEC104 master station and the IEC104 slave station. The network device that establishes the network connection between the two can also be the IEC104 master station and / or the IEC104 slave station device itself connected to each other through the network, which is not limit...

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Abstract

A method and apparatus for verifying an IEC 104 message are disclosed. The method for verifying IEC 104 message is characterized in that that device is applied to network equipment connecting IEC 104master station and IEC 104 slave station. The method comprises the follow steps: step A, judging whether the received message is an IEC 104 message when the message is received; If yes, the process goes to step B for processing; step B, verifying whether the message meets the preset IEC 104 message format requirements; If yes, the process is carried out in step C; step C, analyze that message, obtaining a plurality of preset characteristic information, and transferring the message and the obtained characteristic information to the step D for processing; step D, reading the pre-recorded sessionstate, and verifying whether the obtained characteristic information conforms to the preset session logic rule according to the read session state; If so, the message is judged to be legal.

Description

technical field [0001] The embodiment of this specification relates to the field of network communication technology, and in particular to an IEC104 message verification method and device. Background technique [0002] The traditional firewall acts on the network layer and the transport layer, and verifies the message according to factors such as the IP source address, IP destination address, TCP source port number, and TCP link status of the message. The IEC104 message is not applicable. [0003] The proxy firewall can monitor the application layer communication flow by establishing a special proxy service program, but the proxy firewall consumes more CPU resources and is slower, which will increase the network delay of the IEC104 message. Contents of the invention [0004] In view of this, the embodiment of this specification provides an IEC104 message verification method and device, and the technical solution is as follows: [0005] A kind of IEC104 message verificati...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L63/12H04L69/22
Inventor 贾新奎
Owner HANGZHOU DPTECH TECH
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