Network security monitoring method based on the network life frequency spectrum

Abstract

The network security monitor method based on network life frequency spectrum comprises: with fixed network-flow sampling period, collecting network flow, extracting network security eigen parameter and normalizing to form a network life spectrum representing network security and healthy level vividly. This invention is real time and dynamic, and provides reference and support for management decision.

Description

technical field [0001] The invention relates to a network security monitoring method based on network vital spectrum, and proposes a network vital spectrum representing network security and health, belonging to the field of computer network security. Background technique [0002] With the construction of information technology and the popularization of network applications, network security issues have encountered new severe challenges - DoS / DDoS attacks, large-scale outbreaks of worms, large amounts of spam that are difficult to suppress, and wanton flooding of various P2P video / voice downloads Abnormal network traffic generated by such applications seriously affects the network speed of the local area network and information applications, leading to large-scale network interruptions, a large waste of resources and hundreds of millions of economic losses. Although various security devices and products such as firewalls, IDS / IPS, and anti-viruses have been deployed in the ne...

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Problems solved by technology

The impact of abnormal traffic on the network is mainly reflected in two aspects. It occupies bandwidth resources, congests the network, causes network packet loss, increases delay, and in severe cases, causes network unavailability; occupies network device system resources (CPU, memory, etc.) , so that the network cannot provide normal services

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