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nxdomain response packet processing method and device

A processing method and response packet technology, applied in the field of communication, can solve the problem of low processing efficiency of NXDOMAIN faults, and achieve the effect of improving processing efficiency

Active Publication Date: 2021-04-20
GUIZHOU BAISHANCLOUD TECH CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0017] The present invention provides a method and device for processing NXDOMAIN response packets to at least solve the problem of low efficiency of NXDOMAIN fault processing in the related art

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  • nxdomain response packet processing method and device
  • nxdomain response packet processing method and device

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Embodiment Construction

[0053] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0054] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

[0055] In this embodiment, a method for processing NXDOMAIN response packets is provided, figure 1 is a flow chart of the NXDOMAIN response packet processing method according to an embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0056] Step S101, intercepting the DNS response packet generated by the DNS server for the resolution request;

[0057] Step S102, judging whether the response stat...

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Abstract

The invention provides a method and device for processing NXDOMAIN response packets. Wherein, the method includes: intercepting the DNS response packet generated by the DNS server for the resolution request; judging whether the response state of the DNS response packet is the NXDOMAIN state; judging whether the response state of the DNS response packet is the NXDOMAIN state, judging whether the DNS response packet is in the NXDOMAIN state; Whether the requested domain name belongs to the whitelist domain name; if it is judged that the domain name requested by the parsing request belongs to the whitelist domain name, the DNS response packet is discarded. Through the invention, the problem of low processing efficiency of NXDOMAIN failure is solved, and the processing efficiency of NXDOMAIN failure is improved.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for processing NXDOMAIN response packets. Background technique [0002] Domain Name System (DNS for short) resolution is one of the most important links in the network access process, and its main function is to convert domain names into Internet Protocol (IP) addresses recognizable by the network. [0003] The DNS response status mainly includes NOERROR, SERVFAIL, NXDOMAIN, and REFUSED. Among them, the response result of NXDOMAIN is the most harmful to the overall business and requires key control. [0004] NXDOMAIN (Domain name does not exist, Non-Existent domain) means that the domain name server claims that the query domain name is indeed resolved by itself, but the domain name does not exist in its own records. This is a negative response conclusion of the authoritative domain name server. It is an effective information for the carrier DNS (DNS wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12
CPCH04L61/4511
Inventor 符立佳苗辉
Owner GUIZHOU BAISHANCLOUD TECH CO LTD
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