Multicast security control method and device based on DNS

  • US 10,666,614 B2
  • Filed: 06/08/2015
  • Issued: 05/26/2020
  • Est. Priority Date: 09/19/2014
  • Status: Active Grant
First Claim
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1. A multicast security control method based on Domain Name System DNS, comprising:

  • transmitting a DNS request message to a domain name server to acquire a multicast source DNS address list of an Internet Protocol Television IPTV server;

    conducting address verification on a multicast data message according to the multicast source DNS address list and a locally maintained multicast address list after the multicast data message issued by the IPTV server is received; and

    conducting forwarding control on the multicast data message according to a verification result;

    wherein the step of transmitting the DNS request message to the domain name server to acquire the multicast source DNS address list information of the IPTV server comprises;

    allocating domain name address information of the IPTV server;

    transmitting the DNS request message to the domain name server, wherein the DNS request message includes the domain name address information of the IPTV server;

    receiving a response message, fed back by the domain name server, corresponding to the domain name address information of the IPTV server; and

    parsing the response message to acquire the multicast source DNS address list of the IPTV server.

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