Patents by Inventor Kathryn de Graaf

Kathryn de Graaf 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).

  • Tunneling DHCP options in authentication messages
    Patent number: 9021100
    Abstract: An example network device includes network interfaces and a control unit that receives a network configuration request from a client device and sends a network configuration response to the client device.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: April 28, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Kathryn De Graaf, Paul Raison, John Liddy, John C. Scano, Sanjay Wadhwa
  • Dynamic host configuration protocol (DHCP) authentication using challenge handshake authentication protocol (CHAP) challenge
    Patent number: 8555347
    Abstract: A method performed by a Dynamic Host Configuration Protocol (DHCP) server comprising receiving a DHCP DISCOVER message from a DHCP client; generating a challenge in response to the DHCP DISCOVER message; sending the challenge to an authentication device; receiving a first challenge response from the authentication device; generating a DHCP OFFER message; sending the challenge to the DHCP client in the DHCP OFFER message; receiving a DHCP REQUEST message that includes a second challenge response from the DHCP client; comparing the first challenge response with the second challenge response; and authenticating the DHCP client when the first challenge response and the second challenge response match.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: October 8, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Kathryn De Graaf, John Liddy, Paul Raison, John C. Scano, Sanjay Wadhwa
  • DYNAMIC HOST CONFIGURATION PROTOCOL (DHCP) AUTHENTICATION USING CHALLENGE HANDSHAKE AUTHENTICATION PROTOCOL (CHAP) CHALLENGE
    Publication number: 20110154440
    Abstract: A method performed by a Dynamic Host Configuration Protocol (DHCP) server comprising receiving a DHCP DISCOVER message from a DHCP client; generating a challenge in response to the DHCP DISCOVER message; sending the challenge to an authentication device; receiving a first challenge response from the authentication device; generating a DHCP OFFER message; sending the challenge to the DHCP client in the DHCP OFFER message; receiving a DHCP REQUEST message that includes a second challenge response from the DHCP client; comparing the first challenge response with the second challenge response; and authenticating the DHCP client when the first challenge response and the second challenge response match.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Applicant: JUNIPER NETWORKS, INC.
    Inventors: Kathryn DE GRAAF, John LIDDY, Paul RAISON, John C. SCANO, Sanjay WADHWA
  • Method for encoding SNMP summary objects
    Patent number: 5802309
    Abstract: Data between two stations is often transmitted in the form of a parameter and the name or identifier of the parameter. The present invention divides the identifier into a prefix, an attribute, and a suffix. The actual parameters having a particular prefix or suffix are then transmitted along with the attributes. Then parameters having a different suffix but the same prefix are transmitted along with the respective attributes. This is repeated until all suffixes of the first prefix have been used. The process is then repeated for a different prefix. Indicators are used to indicate the start of a particular group having a particular suffix and a particular prefix. In this way the entire identifier for each parameter does not need to be transmitted each time a parameter is transmitted.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: September 1, 1998
    Assignee: 3Com Corporation
    Inventors: John Cook, Kathryn de Graaf, Shay Leshkowitz, Paul Greizerstein