Patents by Inventor Sean W Hull

Sean W Hull 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 protecting a firewall load balancer from a denial of service attack
    Patent number: 7770215
    Abstract: A method for protecting firewall load balancers from a denial of service attack is provided. Packets are received by the firewall load balancer. Each packet has a source and a destination. The firewall load balancer is equipped with a connection database that can contain entries about the packets. Upon receipt of a packet, the connection database is queried to determine whether or not there is an entry for the received packet. If an entry is found in the database, the packet is forwarded to its destination. Otherwise, if the packet was received from a firewall, then a new connection entry for the packet is built and is saved to the connection database and the packet is forwarded on to its destination. If the packet does not have an entry (match) in the connection database and the packet was not received from a firewall, then the packet is forwarded to a firewall.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: August 3, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Chris O'Rourke, Gaurang K. Shah, Louis F. Menditto, Mark Albert, Michael S. Sutton, Pranav K. Tiwari, Robert M. Batz, Richard Gray, Sean W. Hull, Tzu-Ming Tsang
  • Method for Protecting a Firewall Load Balancer From a Denial of Service Attack
    Publication number: 20080028456
    Abstract: A method for protecting firewall load balancers from a denial of service attack is provided. Packets are received by the firewall load balancer. Each packet has a source and a destination. The firewall load balancer is equipped with a connection database that can contain entries about the packets. Upon receipt of a packet, the connection database is queried to determine whether or not there is an entry for the received packet. If an entry is found in the database, the packet is forwarded to its destination. Otherwise, if the packet was received from a firewall, then a new connection entry for the packet is built and is saved to the connection database and the packet is forwarded on to its destination. If the packet does not have an entry (match) in the connection database and the packet was not received from a firewall, then the packet is forwarded to a firewall.
    Type: Application
    Filed: October 30, 2006
    Publication date: January 31, 2008
    Applicant: Cisco Technology, Inc.
    Inventors: Chris O'Rourke, Gaurang K. Shah, Louis F. Menditto, Mark Albert, Michael S. Sutton, Pranav K. Tiwari, Robert M. Batz, Richard Gray, Sean W. Hull, Tzu-Ming Tsang
  • Method for protecting a firewall load balancer from a denial of service attack
    Patent number: 7131140
    Abstract: A method for protecting firewall load balancers from a denial of service attack is provided. Packets are received by the firewall load balancer. Each packet has a source and a destination. The firewall load balancer is equipped with a connection database that can contain entries about the packets. Upon receipt of a packet, the connection database is queried to determine whether or not there is an entry for the received packet. If an entry is found in the database, the packet is forwarded to its destination. Otherwise, if the packet was received from a firewall, then a new connection entry for the packet is built and is saved to the connection database and the packet is forwarded on to its destination. If the packet does not have an entry (match) in the connection database and the packet was not received from a firewall, then the packet is forwarded to a firewall.
    Type: Grant
    Filed: February 19, 2001
    Date of Patent: October 31, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Chris O'Rourke, Gaurang K Shah, Louis F Menditto, Mark Albert, Michael S Sutton, Pranav K Tiwari, Robert M Batz, Richard Gray, Sean W Hull, Tzu-Ming Tsang