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Tools and techniques for directing packets over disparate networks

DC CAFC
  • US 6,775,235 B2
  • Filed: 02/07/2003
  • Issued: 08/10/2004
  • Est. Priority Date: 12/29/2000
  • Status: Expired due to Term
First Claim
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1. A controller which controls access to multiple independent disparate networks in a parallel network configuration, the disparate networks comprisinig at least one private network and at least one network based on the Internet, the controller comprising:

  • a sit interface connecting the controller to a site;

    at least two network interfaces which send packets toward the disparate networks; and

    a packet path selector which selects between network interfaces according to at least;

    a destination of the packet, an optional presence of alternate paths to that destination, and at least one specified criterion for selecting between alternate paths when such alternate paths are present;

    wherein the controller receives a packet through the site interface and sends the packet through the network interface that was selected by the packet path selector; and

    wherein the packet path selector selects between network interfaces according to a security criterion, thereby promoting use of multiple disparate networks to carry different pieces of a given message so that unauthorized interception of packets on fewer than all of the disparate networks used to carry the message will not provide the total content of the message.

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