Active defense method and nodes based on blockchain smart contracts

Abstract

The invention provides an active defense method based on a block chain intelligent contract, and the method comprises the following steps: enabling one defensive alliance member to judge whether a flow is an abnormal flow or not after the defensive alliance member is attacked: recording the attack side machine fingerprint if the flow is the abnormal flow, and notifying one of the remaining defensive alliance members or more of the abnormal flow, and requiring for the defense; executing a second intelligent contract after the remaining defensive alliance members receives the notification of defense requiring, i.e., transmitting a data package to an attack side, and quitting the active defense till a set quitting condition is met. According to the invention, equipment which supports the block chain intelligent contract is deployed on the Internet, and the intelligent contract will be automatically started after one server is attacked, and a data package is actively transmitted to the attack side, thereby enabling the attack side not to continue to attack, and achieving the purpose of protecting the server.

Description

technical field [0001] The invention relates to a method for actively defending against DDoS (Distributed Denial of Service) attacks on the Internet, in particular to an active defense method and nodes based on blockchain smart contracts. Background technique [0002] During the development of the Internet, some individuals or organizations (hackers or hacker organizations) sent a large amount of data to some servers in a short period of time, which caused the servers to fail to provide services to the outside world, and made profits from it. DDoS attacks often cause operator service interruption and heavy losses. The attacked server can only passively provide defensive measures by increasing the number of servers, using firewalls, and increasing bandwidth. [0003] The traditional way has the following problems: [0004] (1) The feedback is slow, the server cannot distinguish normal traffic or abnormal traffic, and the server cannot work normally when the warning is issue...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the server is attacked by DDoS, the present invention provides an active defense method based on blockchain smart contracts. Devices supporting blockchain smart contracts are deployed on the Internet. After a server is attacked, the smart contracts will be automatically activated. Actively send data packets to the attacker, so that the attacker cannot continue to attack, so as to achieve the purpose of protecting the server

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