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DNS (domain name system) system and method

A technology of DNS service and preset algorithm, which is applied in the field of DNS system, can solve problems such as attacks, and achieve the effects of improving security, preventing DNS attacks, and ensuring the legitimacy of identity

Inactive Publication Date: 2015-07-22
PHICOMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a DNS system and method for solving the problem in the prior art that illegal hosts pretend to be DNS servers to perform DNS attacks

Method used

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  • DNS (domain name system) system and method
  • DNS (domain name system) system and method
  • DNS (domain name system) system and method

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Embodiment Construction

[0034] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0035] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual impleme...

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Abstract

The invention provides a DNS (domain name system) system and a DNS method. The DNS system comprises a DNS server and a DNS client, wherein the DNS server comprises an establishment connection module, a client ID processing module and a domain name analysis module, wherein the establishment connection module is in TCP (transmission control protocol) connection with the DNS client; the client ID processing module is used for receiving a client ID transmitted by the DNS client, carrying out operation on the client ID and a preset secrete key according to a preset algorithm to obtain a first operation result and transmitting the first operation result to the DNS client; the domain name analysis module is used for receiving a domain name transmitted by the DNS client, analyzing the domain name and transmitting an IP address to the DNS client. According to the technical scheme, the interaction is carried out by adopting the TCP, before the analysis domain request is transmitted by the client to the server, the authentication is requested from the server, the identity legality of the DNS server is guaranteed, and the safety is greatly improved.

Description

technical field [0001] The invention relates to a computer network technology, in particular to a DNS system and method. Background technique [0002] DNS is short for Domain Name System, which is used to name computers and network services organized into domain hierarchies. A domain name is composed of a string of words or abbreviations separated by dots. Each domain name corresponds to a unique IP address. There is a one-to-one correspondence between domain names and IP addresses on the Internet. DNS is the server for domain name resolution. When we set up the IP network, we must tell each host about the location of the DNS server (we can manually set it on each host, or use DHCP to specify). The purpose of setting DNS is to ask DNS to help resolve domain names and IP addresses. In this setting process, DNS is called resolver (that is, the DNS server responsible for resolution), and the host being set is called DNS client, that is, the host that makes the resolution requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L9/32H04L29/06
CPCH04L63/083H04L61/4511
Inventor 张伟
Owner PHICOMM (SHANGHAI) CO LTD
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