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Domain name recursion service pre-judgment and intervention method

A recursive service and recursive server technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problem of not being able to detect the abnormal state of authoritative servers in time, reduce the accessibility of parsing services, and reduce the security of client Internet access and affect the parsing of recursive servers. Quality and parsing security issues, to achieve the effect of flexible deployment, ensuring parsing security, and ensuring Internet security

Active Publication Date: 2014-03-26
CHINA INTERNET NETWORK INFORMATION CENTER
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In short, the caching mechanism of the recursive server makes it impossible to discover the abnormal state of the authoritative server in time
The lag in problem discovery affects the resolution quality and security of the recursive server itself, thereby reducing the accessibility of its resolution services and the Internet security of clients

Method used

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  • Domain name recursion service pre-judgment and intervention method
  • Domain name recursion service pre-judgment and intervention method
  • Domain name recursion service pre-judgment and intervention method

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Embodiment Construction

[0036] The present invention does not allow the recursive server to complete the preprocessing process and action, but completes it outside the recursive server. The preprocessing process of a domain name proposed by the present invention can be divided into three steps: first, object selection: obtain a certain number of domain names through a certain domain name list selection method, and synchronize some resource record sets in the recursive server to the pre-processed domain name Judgment system local. Second, pre-judgment: before the resource records of the domain name expire, the recursive server makes a recursive request to the relevant authoritative servers to obtain their new resource records (sets) and judge their parsing status. Third, intervention: When a domain name is found to be at risk, it intervenes appropriately in the cache before its resource record set expires.

[0037] 1) Object selection

[0038] For the convenience of expression, this article refers t...

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Abstract

The invention discloses a domain name recursion service pre-judgment and intervention method. The method includes the steps that firstly, domain names to be monitored are selected, and resource records of the domain names, to be monitored, in a recursion server are synchronized to a local system by a pre-judgment system; secondly, the resource record of each domain name is monitored; thirdly, if it is found that resource records of the set type of a domain name are changed, characteristic data of the domain name are acquired and are recognized by a classifier, and whether a change of the resource records of the set type is a dangerous change or not is judged; fourthly, if the dangerous change is a change of an authoritative server, an NS record and a Glue record are requested from an original authoritative server of the domain name and are written into a cache of the authoritative server; fifthly, if the authoritative server is not changed, the lifetime of original resource records, in the cache of the recursion server, of the domain name is prolonged; sixthly, if a negative abnormal change happens or the authoritative server is in a zone-unreachable state, the lifetime of a resource record set, in the cache of the recursion server, of the domain name is pronged. By means of the method, the safety of the recursion server and a user can be improved.

Description

technical field [0001] The invention relates to a pre-judgment intervention method for domain name recursive service, and belongs to the technical field of computer networks. Background technique [0002] Domain Name System and its security status: [0003] As an important infrastructure of the Internet, the Domain Name System (DNS) has always provided key basic services for the operation of the global Internet. With the explosive growth of the Internet, various DNS-related new technologies have emerged one after another, such as IPv6, multilingual domain names, and DNS Security Extension (DNS Security Extension, DNSSEC), etc., and the DNS system has become more and more complex. Due to the lack of consideration of security and scalability at the beginning of the design, the domain name system has inherent deficiencies and vulnerabilities in the protocol, implementation and operation, which makes it face many security threats. Among them, some threats in data corruption (s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/26H04L29/06
Inventor 刘明星金键李晓东
Owner CHINA INTERNET NETWORK INFORMATION CENTER
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