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Protecting communication link between content delivery network and content origin server

  • US 10,044,673 B2
  • Filed: 07/22/2015
  • Issued: 08/07/2018
  • Est. Priority Date: 07/22/2015
  • Status: Active Grant
First Claim
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1. A method of protecting a website from attack, comprising:

  • providing a content delivery network (CDN) having a set of content servers (CS) to provide content delivery on behalf of a set of participating content providers, at least one of the set of participating content providers sourcing content for delivery by the CDN from an origin server;

    providing a set of private Internet Protocol (IP) addresses assigned to the origin server for communication between the CDN and the origin server;

    transmitting a request for content from the CDN to the origin server using a first IP address selected from the set of private IP addresses;

    receiving the content at the CDN from the origin server in response to the request for content;

    identifying a malicious attack on the first IP address;

    in response to identifying the malicious attack, selecting a second IP address from the set of private IP addresses;

    subsequent to selecting the second IP address, transmitting a request for additional content from the CDN to the origin server using the second IP address; and

    receiving the additional content at the CDN from the origin server in response to the request for additional content.

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