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Computational puzzles against dos attacks

A puzzle, computer networking technique used in data communications to solve problems such as delaying critical messages and degrading performance

Active Publication Date: 2021-11-09
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Processing caused by receiving an unexpected set of messages may delay the processing of critical messages, leading to failure of global processing or significantly worse performance
In addition, industrial computer networks can be very sensitive to DoS attacks because they often include devices based on hardware that often have limited computing resources (because of the environment in which the devices are deployed, product lifespan, and cost)

Method used

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  • Computational puzzles against dos attacks
  • Computational puzzles against dos attacks
  • Computational puzzles against dos attacks

Examples

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Embodiment Construction

[0052] For simplicity and clarity of illustration, the drawings illustrate the general manner of construction, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the discussion of the described embodiments of the invention. Additionally, elements in the drawings are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help to improve understanding of embodiments of the invention. To aid understanding, certain figures may be shown in an idealized manner, such as when showing structures with straight lines, acute angles, and / or parallel planes, etc., which may greatly reduce symmetry and order under real-world conditions . The same reference numbers in different drawings denote the same elements, while similar reference numbers may, but do not necessarily, denote similar elements.

[0053] In addition, it should be appar...

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PUM

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Abstract

A method for transmitting data in a computer network is provided, which comprises, at a first node of the network: receiving a computing puzzle from a puzzle server node of the network distinct from the first node; determining a solution to the puzzle for transmitting a message to a second node of the network distinct from the puzzle server node; and transmitting data to the second node, wherein the transmitted data comprises a message and the determined solution to the puzzle.

Description

technical field [0001] The present disclosure relates to the field of data communication in communication networks, in particular to the field of data communication in industrial networks such as industrial bus networks (eg OPC-UA networks). Background technique [0002] Data communication mechanisms in computer networks such as industrial fieldbus networks generally allow data, including time-critical distributed control data, to be sent and / or received between two nodes of the network according to data communication protocols, which typically are proprietary and specifically configured for the target use case. [0003] In recent years, industrial networks, which have traditionally been closed networks, have grown to include nodes (eg, management nodes or inter-network communication nodes) connected to a public network (eg, the Internet). For example, an operations and management (O&M) node implemented as a personal computer platform connected to the Internet running a PC ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L63/1458H04L63/10H04L2463/144H04L9/3242H04L9/12H04L9/0643H04L2463/141
Inventor R·罗莱
Owner MITSUBISHI ELECTRIC CORP