Patents by Inventor Brian Francis Cox

Brian Francis Cox has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for forwarding generic routing encapsulation packets at a network address translation gateway
    Patent number: 10530736
    Abstract: In one embodiment, a method includes receiving on a private network at a Network Address Translation (NAT) gateway, a Generic Routing Encapsulation (GRE) packet comprising a client address and a GRE node private Internet Protocol (IP) address, mapping the client address to the GRE node private IP address at the NAT gateway, storing the mapping at the NAT gateway, replacing the GRE node private IP address in the GRE packet with a public IP address of the NAT gateway, and transmitting the GRE packet from the NAT gateway on a public network. Wherein the mapping is used in forwarding packets received on the public network at the NAT gateway to a client on the private network. An apparatus and logic are also disclosed herein.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: January 7, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventor: Brian Francis Cox
  • METHOD AND APPARATUS FOR FORWARDING GENERIC ROUTING ENCAPSULATION PACKETS AT A NETWORK ADDRESS TRANSLATION GATEWAY
    Publication number: 20170208032
    Abstract: In one embodiment, a method includes receiving on a private network at a Network Address Translation (NAT) gateway, a Generic Routing Encapsulation (GRE) packet comprising a client address and a GRE node private Internet Protocol (IP) address, mapping the client address to the GRE node private IP address at the NAT gateway, storing the mapping at the NAT gateway, replacing the GRE node private IP address in the GRE packet with a public IP address of the NAT gateway, and transmitting the GRE packet from the NAT gateway on a public network. Wherein the mapping is used in forwarding packets received on the public network at the NAT gateway to a client on the private network. An apparatus and logic are also disclosed herein.
    Type: Application
    Filed: January 19, 2016
    Publication date: July 20, 2017
    Applicant: CISCO TECHNOLOGY, INC.
    Inventor: Brian Francis Cox
  • 802.1X authentication technique for shared media
    Patent number: 7624431
    Abstract: The present invention provides a technique for securely implementing port-based authentication on a shared media port in an intermediate node, such as a router. To that end, the invention provides enhanced port-based network access control that includes client-based control at the shared media port. Unlike previous implementations, the port does not permit multiple client nodes to access a trusted subnetwork as soon as a user at any one of those nodes is authenticated by the subnetwork. Instead, port-based authentication is performed for every client node that attempts to access the trusted subnetwork through the shared media port. As such, access to the trusted subnetwork is not compromised by unauthenticated client nodes that “piggy-back” over the shared media port after a user at another client node has been authenticated by the trusted subnetwork.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: November 24, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Brian Francis Cox, Bruce McMurdo, Venkateswara Rao Yarlagadda