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A 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: 2022-06-24
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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  • A domain name system security protection method and device
  • A domain name system security protection method and device
  • A domain name system security protection method and device

Examples

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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 invention herein. Therefore, the above description should not be regarded as limiting, but merely 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 present 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 present invention. principle.

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

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PUM

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Abstract

The invention discloses a domain name system security protection method and device, wherein the method includes: receiving a first domain name query request sent by a first electronic device, wherein the first domain name query request contains domain name information; based on the domain name Information acquisition of a first domain name response message; acquiring a first IP address based on the host record in the first domain name response message, wherein the first IP address is the IP of the target device pointed to by the first domain name query request Address: judging whether the first IP address meets the security protection condition, if not, not feeding back the first domain name response message to the first electronic device. The domain name system security protection method of the embodiment of the present invention can prevent users from being maliciously attacked by accessing malicious devices, will not cause security protection failure due to recursive query and iterative query, can provide users with stable and reliable security protection, and maintains low maintenance costs. lower.

Description

technical field [0001] The present invention relates to the technical field of domain name systems, in particular to a method and device for security protection of domain name systems. Background technique [0002] Domain Name System (English: Domain Name System, abbreviation: DNS) is a service of the Internet. It acts as a distributed database that maps domain names and IP addresses to each other, making it easier for people to access the Internet. The DNS server is exposed to the public network and is easily attacked 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 of 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 use a distribut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40H04L61/4511
CPCH04L63/0236H04L63/1441H04L61/4511
Inventor 靳彦昭宗增强
Owner BEIJING TOPSEC NETWORK SECURITY TECH
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