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Anonymous query method and system for reducing privacy leakage on DNS recursive server

A recursive server and query method technology, applied in the field of DNS, anonymous query methods and systems, can solve the problems of unrealistic large-scale modification and lack of deployability, and achieve the effect of reducing hidden dangers of privacy leakage and query time.

Active Publication Date: 2018-10-09
CHINA INTERNET NETWORK INFORMATION CENTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two solutions are not deployable, and it is very unrealistic to modify the existing DNS architecture on a large scale

Method used

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  • Anonymous query method and system for reducing privacy leakage on DNS recursive server
  • Anonymous query method and system for reducing privacy leakage on DNS recursive server
  • Anonymous query method and system for reducing privacy leakage on DNS recursive server

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Embodiment Construction

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0050] Such as figure 1 As shown, a traditional DNS query generally involves three parts: a stub server (usually a user host), a recursive server, and an authoritative domain name server. All DNS queries of the user will pass through the recursive server, which initiates the query, and finally obtains the corresponding query results.

[0051] Such as figure 2 As shown, in one embodiment, the present invention provides a system for performing DNS query by broadcasting popular domain names combined with P2P user cooperation. The system runs between user hosts and recursive servers, and replaces The original process of directly querying the recursive server reduces the leakage of user privacy at this level.

[0052] The working principle of the system is to minimize the user quer...

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Abstract

The invention aims at solving the problem of privacy collection on a DNS recursive server and provides an anonymous query method for reducing privacy leakage on the DNS recursive server. The method comprises the following steps of after a user host sends a DNS request, monitoring the DNS request and analyzing the request, analyzing whether the domain name inquired by the DNS request is in a popular domain name list, and if the domain name is in the popular domain name list, returning a query result; initiating a request to the recursive server after connecting a user to a P2P network; and regularly updating the IP address of the popular domain name to the recursive server, and periodically broadcasting the updated popular domain name to the user host. A inquired real user can be hidden maximumly so as to protect a user privacy. Simultaneously, because expansion is performed based on an existing DNS layer, an existing DNS framework is not influenced and good compatibility is possessed.Simultaneously, a system corresponding to the above method is provided.

Description

technical field [0001] The invention relates to the field of information technology, in particular to DNS, in particular to an anonymous query method and system for reducing privacy leakage on a DNS recursive server. Background technique [0002] DNS is currently one of the most important infrastructure components of the Internet, and almost every activity on the Internet begins with a DNS query. Due to the relatively simple working principle of DNS, almost all DNS traffic is transmitted based on UDP plaintext, and resource records do not add any authentication and encryption measures. Due to the above defects, this type of protocol is vulnerable to so-called man-in-the-middle attacks. (Man-in-the-middle attack), the middleman can attack by eavesdropping, tampering and forging DNS data packets. In addition, the current DNS query is basically based on UDP, which makes it difficult to encrypt it now (most encryption methods are based on TCP). In recent years, privacy leakage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L29/08H04L29/06
CPCH04L63/0421H04L67/104H04L61/4552H04L61/4511H04L67/56
Inventor 黄锴孔宁姚健康
Owner CHINA INTERNET NETWORK INFORMATION CENTER
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