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Domain name system security protection method and device

A domain name system security and security protection technology, applied in the field of domain name system security protection methods and devices, can solve problems such as security protection failure, and achieve the effects of low maintenance cost and reliable security protection

Active Publication Date: 2019-09-20
BEIJING TOPSEC NETWORK SECURITY TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If hackers can build their own domain name server and use recursive query or iterative query, they can bypass the security protection strategy based on source IP and destination IP in the prior art, resulting in failure of security protection

Method used

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  • Domain name system security protection method and device
  • Domain name system security protection method and device
  • Domain name system security protection method and device

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Embodiment Construction

[0051] Various aspects and features of the invention are described herein with reference to the accompanying drawings.

[0052] It should be understood that various modifications may be made to the embodiments of the inventions herein. Accordingly, the above description should not be viewed as limiting, but only as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the invention.

[0053] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the general description of the invention given above and the detailed description of the embodiments given below, serve to explain the invention. principle.

[0054] These and other characteristics of the invention will become apparent from the following description of preferred forms of embodiment given as non-limiting examples with reference to the accompanying dr...

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PUM

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Abstract

The invention discloses a domain name system security protection method and device, and the method comprises the steps: receiving a first domain name query request sent by first electronic equipment, the first domain name query request comprising domain name information; acquiring a first domain name response message based on the domain name information; obtaining a first IP address based on a host record in the first domain name response message, wherein the first IP address is an IP address of a target device pointed by the first domain name query request; and judging whether the first IP address conforms to a security protection condition or not, and if not, not feeding back the first domain name response message to the first electronic equipment. According to the domain name system security protection method provided by the embodiment of the invention, a user can be prevented from visiting malicious equipment and being maliciously attacked, security protection failure caused by recursive query and iterative query can be avoided, stable and reliable security protection can be provided for the user, and the maintenance cost is relatively low.

Description

technical field [0001] The invention relates to the domain name system technical field, in particular to a domain name system security protection method and device. Background technique [0002] Domain Name System (English: Domain Name System, abbreviation: DNS) is a service of the Internet. As a distributed database that maps domain names and IP addresses to each other, it can make it easier for people to access the Internet. The DNS server is exposed in the public network and is extremely vulnerable to attacks by criminals. The DNS server in the prior art mainly implements security protection by performing security checks on the source IP and destination IP in the feedback information fed back to the terminal browser. Due to the large scale of the Internet, it is impossible to store the domain names in the entire Internet in a domain name server. Therefore, as early as 1983, the Internet began to adopt a hierarchical tree structure naming method and a distributed domain n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
CPCH04L63/0236H04L63/1441H04L61/4511
Inventor 靳彦昭宗增强
Owner BEIJING TOPSEC NETWORK SECURITY TECH
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