×

Method for blocking denial of service and address spoofing attacks on a private network

  • US 6,738,814 B1
  • Filed: 03/18/1998
  • Issued: 05/18/2004
  • Est. Priority Date: 03/18/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for blocking an attack on a private network implemented by a routing device interconnecting the private network to a public network, comprising:

  • receiving a request to establish a communication connection between an endpoint of a public network and an endpoint of a private network;

    requesting an acknowledgment from the endpoint of the public network;

    determining whether an acknowledgment has been received within a predetermined amount of time;

    if an acknowledgment is received, comparing the request to establish a communication connection with existing connections; and

    if an existing communication connection between the endpoint of the public network and the endpoint of the private network already exists, denying the request to establish a communication connection.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×