Patents by Inventor Thomas Narten

Thomas Narten 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).

  • Methods, systems and computer program products for detecting a spoofed source address in IP datagrams
    Patent number: 7134012
    Abstract: Methods, systems and computer program products are provided for determining if a packet has a spoofed source Internet Protocol (IP) address. A source media access control (MAC) address of the packet and the source IP address are evaluated to determine if the source IP address of the packet has been bound to the source MAC address at a source device of the packet. The packet is determined to have a spoofed source IP address if the evaluation indicates that the source IP address is not bound to the source MAC address. Such an evaluation may be made for packets having a subnet of the source IP address which matches a subnet from which the packet originated.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: November 7, 2006
    Assignee: International Business Machines Corporation
    Inventors: Ronald P. Doyle, John R. Hind, Thomas Narten, Marcia L. Peters
  • Blended SYN cookies
    Patent number: 7058718
    Abstract: A method of producing a blended SYN cookie can include identifying within a SYN packet a source network address and desired communications session parameters. Subsequently, an index value into a table of pre-configured sets of communications session parameters can be retrieved. Notably, the index value can reference one of the sets which approximates the desired communications parameters. A hash value can be computed based upon the source network address, a constant seed and current date and time data. Finally, the computed hash value can be combined with the index value, the combination forming the blended SYN cookie.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: June 6, 2006
    Assignee: International Business Machines Corporation
    Inventors: Stephen M. Fontes, John R. Hind, Thomas Narten, Marcia L. Stockton
  • Blended SYN cookies
    Publication number: 20030135625
    Abstract: A method of producing a blended SYN cookie can include identifying within a SYN packet a source network address and desired communications session parameters. Subsequently, an index value into a table of pre-configured sets of communications session parameters can be retrieved. Notably, the index value can reference one of the sets which approximates the desired communications parameters. A hash value can be computed based upon the source network address, a constant seed and current date and time data. Finally, the computed hash value can be combined with the index value, the combination forming the blended SYN cookie.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Applicant: International Business Machines Corporation
    Inventors: Stephen M. Fontes, John R. Hind, Thomas Narten, Marcia L. Stockton
  • Methods, systems and computer program products for detecting a spoofed source address in IP datagrams
    Publication number: 20030043853
    Abstract: Methods, systems and computer program products are provided for determining if a packet has a spoofed source Internet Protocol (IP) address. A source media access control (MAC) address of the packet and the source IP address are evaluated to determine if the source IP address of the packet has been bound to the source MAC address at a source device of the packet. The packet is determined to have a spoofed source IP address if the evaluation indicates that the source IP address is not bound to the source MAC address. Such an evaluation may be made for packets having a subnet of the source IP address which matches a subnet from which the packet originated.
    Type: Application
    Filed: August 15, 2001
    Publication date: March 6, 2003
    Inventors: Ronald P. Doyle, John R. Hind, Thomas Narten, Marcia L. Peters