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Domain name resolution method, terminal and recursive DNS server

A technology of DNS server and domain name resolution, which is applied in the field of network communication, and can solve problems such as abnormal DNS resolution, tampering, domain name hijacking generation time, etc.

Inactive Publication Date: 2018-10-12
CHINANETCENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing DNS system, the connection between the terminal and the DNS server, and between the DNS server and the DNS server is mainly based on the User Datagram Protocol (UDP), which is prone to abnormal DNS resolution, such as domain name hijacking, generation time (Time To Live, TTL) tampering and other issues

Method used

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  • Domain name resolution method, terminal and recursive DNS server
  • Domain name resolution method, terminal and recursive DNS server
  • Domain name resolution method, terminal and recursive DNS server

Examples

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specific example

[0116] In S301, the terminal generates a first synchronization parameter a, and a generation rule of the first synchronization parameter a is not limited in this embodiment of the present invention. In S302, the terminal sends a connection request message to the recursive DNS server, where the connection request message includes the first synchronization parameter a. In S303, the DNS server receives the connection request message sent by the terminal, where the connection request message includes the first synchronization parameter a. In S304, assuming that the preset rule is to add one to the first synchronization parameter, the recursive DNS server can obtain the first confirmation parameter a+1 according to the preset rule and the first synchronization parameter. In S305, the recursive DNS server sends a connection response message to the terminal; the connection response message includes the first confirmation parameter a+1. In S306, the terminal receives the connection r...

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Abstract

The invention discloses a domain name resolution method, a terminal and a recursive DNS (domain name resolution) server, used for improving the security of the domain name resolution system. The method comprises the steps that: the terminal acquires a domain name to be resolved, the terminal verifies the connection between the terminal and the recursive DNS server, the terminal generates a domainname resolution request according to the domain name to be resolved after the connection verification is passed, the terminal sends a domain name resolution request to the recursive DNS server, the recursive DNS server receives the domain name resolution request sent by the terminal, the recursive DNS server queries local cache based on the domain name to be resolved, and the recursive DNS serversends a domain name resolution response to the terminal when the IP address corresponding to the domain name to be resolved exists in the local cache, wherein the domain name resolution response includes the IP address corresponding to the domain name to be resolved. Thus, the security of message passing between the terminal and the recursive DNS server is improved, thereby improving the securityof the domain name resolution system.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a domain name resolution method, a terminal and a recursive DNS server. Background technique [0002] The Domain Name System (DNS) is responsible for providing domain name resolution services for the Internet. The Domain Name System resolves domain names into Internet Protocol (IP) addresses for interconnection between networks, so that Internet users can access corresponding domain names according to IP addresses. [0003] In the DNS system, the terminal sends a domain name resolution request to the recursive DNS, and the recursive DNS queries the IP address corresponding to the domain name in the DNS system. In the existing DNS system, the connection between the terminal and the DNS server, and between the DNS server and the DNS server is mainly based on the User Datagram Protocol (UDP), which is prone to abnormal DNS resolution, such as domain name hijacking, gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
CPCH04L63/0876H04L61/5007H04L61/4511
Inventor 陈单江许建平
Owner CHINANETCENT TECH