Early warning method and device of network attack

Abstract

The invention discloses an early warning method and device of a network attack, relates to the technical field of network safety and mainly aims at solving the problems that an operating system when suffering from a malicious SSH brute force attack cannot percept the attack and efficient controlling measures cannot be taken in time and efficiently for the operating system which suffers from the SSH brute force attack. The main technical scheme comprises the steps of detecting whether a log about login failure exists in a login log of a terminal operating system when remotely logging in the terminal operating system through a secure shell protocol (SSH); if the log about the login failure exists, analyzing the log about the login failure to determine whether an SSH brute force attack exists; if the SSH brute force attack exists, sending information indicating the existence of the SSH brute force attack to a network manager so as to enable the network manager to prevent the SSH brute force attack conveniently. The early warning method and device of the network attack are mainly used in an SSH brute force attack early warning process.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a network attack early warning method and device. Background technique [0002] Secure Shell (SSH), developed by the Network Working Group of the Internet Engineering Task Force (IETF); SSH is a security protocol based on the application layer and the transport layer. SSH is currently the most reliable protocol designed to provide security for remote login sessions and other network services. Using the SSH protocol can effectively prevent information leakage in the remote management process. [0003] However, Linux servers currently exposed to the Internet are subjected to malicious SSH brute force attacks to varying degrees every day, ranging from dozens of times to tens of thousands of times. Since the initially installed linux server does not have any notification and early warning service when it is subjected to malicious SSH violent attacks, for general system adm...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method for early warning of network attacks, the main purpose of which is to solve the problem of being unable to perceive when suffering from malicious SSH violent attacks, and unable to take effective preventive measures for the operating system suffering from SSH violent attacks in a timely and effective manner.

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