A kind of DNS anti-attack methods, equipment and system

A kind of DNS anti-attack methods, equipment and system

  • CN 107,222,492 A
  • Filed: 06/23/2017
  • Published: 09/29/2017
  • Est. Priority Date: 06/23/2017
  • Status: Active Application
First Claim
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1. a kind of DNS anti-attack methods, it is characterised in that including:

  • Recursion server receives in inquiry of the domain name request message, domain name inquiry request message and carries the recursion serverIn uncached domain name;

    The recursion server determines the first authoritative domain name according to the A records of the corresponding first NS records of domain name and the first NSServer, and send domain name inquiry request message to first authoritative name server;

    The recursion server receives the A records for the domain name that first authoritative name server is returned, the 2nd NS recordsAnd the 2nd NS A records, described in the 2nd NS record be used to parse domain name and the power in normal operating conditionsPrestige name server;

    2nd NS records are replaced the first NS and recorded by the recursion server, and cache the A records of the 2nd NS.

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