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Communication scheme for preventing attack by pretending in service using anycast

  • US 20040146045A1
  • Filed: 11/13/2003
  • Published: 07/29/2004
  • Est. Priority Date: 11/13/2002
  • Status: Abandoned Application
First Claim
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1. A communication device, comprising:

  • a transmission unit configured to transmit a packet to a prescribed destination address;

    a reception unit configured to receive a response packet for responding to the packet transmitted by the transmission unit;

    a first detection unit configured to detect a source address contained in the response packet received by the reception unit;

    a second detection unit configured to detect an identifier indicating that an anycast address is assigned to another communication device that has the prescribed destination address, which is contained in the response packet, when the source address detected by the first detection unit and the prescribed destination address are different; and

    a verification unit configured to verify the response packet, according to the identifier detected by the second detection unit.

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