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Domain name query method, recursive server and storage medium

A recursive server and domain name query technology, applied in the direction of instruments, machine learning, computing, etc., can solve problems such as time difference

Active Publication Date: 2020-09-22
山东伏羲智库互联网研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the time difference in the process of the authoritative server feeding back the resource record to the recursive server, it is easy for attackers to use it to forge the response and make it reach the recursive server before the authoritative server's response

Method used

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  • Domain name query method, recursive server and storage medium
  • Domain name query method, recursive server and storage medium
  • Domain name query method, recursive server and storage medium

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application , but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0031]The Internet plays an increasingly important role in our lives. Acquisition and transmission of information, online shopping, etc., many transactions are completed on the Internet. Our experience is that the web pages of a certain website can be accessed by entering the domain name of a certain website on the terminal device. But in fact, "domain name" is just human language, which cannot be recognized by terminal...

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Abstract

The invention provides a domain name query method, a recursion server and a storage medium. The domain name query method is applied to a recursive server and comprises the following steps: acquiring afirst domain name query request; querying a resource record corresponding to the to-be-queried domain name in a cache database according to the first domain name query request; if the resource recordcorresponding to the to-be-queried domain name does not exist in the cache database, sending a second domain name query request to an authoritative server according to the first domain name query request; receiving a domain name query result sent by the authoritative server; verifying the domain name query result to obtain a verification result; and if the verification result indicates that the domain name query result is correct, caching a resource record corresponding to the to-be-queried domain name, and storing the resource record in the cache database. According to the method, the domainname query result fed back by the authoritative server is verified, caching is conducted only after it is ensured that the domain name query result is correct, and the accuracy of local cache data ofthe recursive server is ensured.

Description

technical field [0001] The present application relates to communication technology, in particular to a domain name query method, a recursive server and a storage medium. Background technique [0002] Domain Name Service (DNS) is mainly used to map human-readable domain names into machine-readable network layer IP addresses. In the process of accessing a specific website, the IP address is generally found through the domain name service, and then accessed. Therefore, it is very important to ensure the accuracy of the domain name accessed by the client. [0003] In related technologies, in the domain name resolution process, the client usually initiates a query to the recursive server, and if the corresponding resource record is cached in the recursive server, a response message is returned directly. If there is no corresponding resource record cached in the recursive server, the recursive server initiates a domain name query to the authoritative server. The authoritative s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12G06F16/2455G06N20/00
CPCG06F16/24552G06N20/00H04L61/4552H04L61/4511
Inventor 李晓东张翼王伟李颖
Owner 山东伏羲智库互联网研究院
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