Domain name filtering system and method

Abstract

The invention provides a domain name filtering system, including a domain name server installed with a filtering agent subsystem for realizing domain name filtering, and a filtering center subsystem for generating filtering commands; wherein, the filtering center subsystem is based on the filtering information input by the user , combined with the status information of the filtering proxy subsystem, generate a corresponding filtering command for the filtering proxy subsystem; the filtering proxy subsystem in the domain name server parses and executes the received filtering command, and modifies the domain name in the domain name server according to the content of the filtering command Configuration file, the domain name server implements the filtering of the domain name to be filtered according to the content of the domain name configuration file. The present invention does not need to make any modification to the domain name server in operation, so it has the advantages of easy implementation and maintenance, and has no influence on the stability and performance of the existing domain name server.

Description

technical field [0001] The invention relates to the field of network security, in particular to a domain name filtering system and method. Background technique [0002] With the rapid development of the Internet, the number of registered and used Internet domain names (DNS) has also increased rapidly. In 2007, the number of registered Internet domain names in my country has reached 11.93 million, with an annual growth rate of 190.4%. At the same time, domain names have gradually become the main tool used by hackers. Using domain names, hackers can flexibly and covertly carry out malicious activities such as hanging horses on large-scale webpages, controlling botnets, and phishing. Thereby tampering with the content of the webpage, stealing important internal data, and more seriously, implanting malicious codes in the webpage (commonly known as "webpage hanging horse"), causing more website visitors to be violated. In order to effectively contain or eliminate malicious infr...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of high deployment cost of the existing domain name filtering system or the high maintenance cost and poor stability of the domain name server used to realize filtering, thereby providing a domain name filtering system that is easy to deploy, easy to maintain, and has high filtering efficiency

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