Patents by Inventor Carlos Fernando Villegas

Carlos Fernando Villegas 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 for enabling a network-addressable device to detect use of its identity by a spoofer
    Patent number: 7039954
    Abstract: A defense against spoofing vandals is provided, where the defense enlists the network-addressable device whose identity is used by the vandal. A network-addressable device checks incoming messages for communication protocol violations that indicate that a spoofer is using the identity of the network-addressable device. When such a protocol violation is detected, the network-addressable device records attributes of the incoming message in a spoofing logbook database. Further, the network-addressable device increments a counter associated with the identity of the spoofer's target. The value of the counter is compared with a predetermined threshold, in order to determine if the supposed spoofing is an isolated incident or part of a persistent attack. When the value of the counter exceeds the threshold, the network-addressable device constructs a spoofing alert, and sends the spoofing alert to a network administrator. The network-addressable device then rejects the message associated with the protocol violation.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: May 2, 2006
    Assignee: International Business Machines Corporation
    Inventors: Charles Steven Lingafelt, Kevin Thomas McClain, Carlos Fernando Villegas
  • Method for enabling a network-addressable device to detect use of its identity by a spoofer
    Publication number: 20020166071
    Abstract: A defense against spoofing vandals is provided, where the defense enlists the network-addressable device whose identity is used by the vandal. A network-addressable device checks incoming messages for communication protocol violations that indicate that a spoofer is using the identity of the network-addressable device. When such a protocol violation is detected, the network-addressable device records attributes of the incoming message in a spoofing logbook database. Further, the network-addressable device increments a counter associated with the identity of the spoofer's target. The value of the counter is compared with a predetermined threshold, in order to determine if the supposed spoofing is an isolated incident or part of a persistent attack. When the value of the counter exceeds the threshold, the network-addressable device constructs a spoofing alert, and sends the spoofing alert to a network administrator. The network-addressable device then rejects the message associated with the protocol violation.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 7, 2002
    Applicant: International Business Machines Corporation
    Inventors: Charles Steven Lingafelt, Kevin Thomas McClain, Carlos Fernando Villegas