Method for preventing IP address deceit in dynamic address distribution

Method for preventing IP address deceit in dynamic address distribution

CN
  • CN 1,466,341 A
  • Filed: 06/22/2002
  • Published: 01/07/2004
  • Est. Priority Date: 06/22/2002
  • Status: Active Application
First Claim
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1. , prevent the method for IP address spoofing in a kind of dynamic address allocation, it is characterized in that comprising:

  • (1) user terminal sends the ARP message to switch;

    (2) switch is checked source MAC in the ARP message and source IP address, promptly in the validated user address table, search and whether have occurrence, if exist, the source IP address of the ARP message that user terminal is sent and source MAC add the ARP table, thereby make the user terminal communication of can surfing the Net;

    Otherwise, abandon this message.

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