Patents by Inventor Henri Altarac

Henri Altarac 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).

  • Controlling ARP packet traffic to enhance network security and scalability in TCP/IP networks
    Patent number: 7596693
    Abstract: A method of preventing ARP broadcast flooding of subscriber access links where an ARP packet is received at a subscriber network edge device and the source and destination information contained within the ARP packet is compared to address lease information for subscribers of a subscriber network. If the destination information obtained from the ARP packet is not associated with an address lease assigned to one of the subscribers, the network device only broadcasts the ARP packet to network uplinks. The method further includes preventing subscribers of a subscriber network from spoofing ARP responses by responding to an ARP request packet with an ARP response packet containing false information. The ARP response packet information is compared to address lease information for the transmitting subscriber. If the source information obtained from the ARP response packet corresponds to address lease information of the transmitting subscriber the ARP response packet is accordingly forwarded.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: September 29, 2009
    Assignee: Occam Networks
    Inventors: Evan John Caves, Henri Altarac, Koral Ilgun
  • Controlling ARP traffic to enhance network security and scalability in TCP/IP networks
    Patent number: 7490351
    Abstract: A method of preventing ARP broadcast flooding of subscriber access links where an ARP packet is received at a subscriber network edge device and the source and destination information contained within the ARP packet is compared to address lease information for subscribers of a subscriber network. If the destination information obtained from the ARP packet is not associated with an address lease assigned to one of the subscribers, the network device only broadcasts the ARP packet to network uplinks. The method further includes preventing subscribers of a subscriber network from spoofing ARP responses by responding to an ARP request packet with an ARP response packet containing false information. The ARP response packet information is compared to address lease information for the transmitting subscriber. If the source information obtained from the ARP response packet corresponds to address lease information of the transmitting subscriber the ARP response packet is accordingly forwarded.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: February 10, 2009
    Assignee: Occam Networks
    Inventors: Evan John Caves, Henri Altarac, Koral Ilgun
  • Filtering subscriber traffic to prevent denial-of-service attacks
    Patent number: 7379423
    Abstract: A method of storing address lease information including a Media Access Control (MAC) address, an IP address, and a port for a subscriber in a database coupled to a network edge device when an address lease is associated with the subscriber, receiving subscriber packets on at least one port of the network edge device, comparing source address information from packets purportedly transmitted by the subscriber with address lease information associated with the subscriber, and forwarding those of the packets if source address information from the packets, including source MAC and IP addresses, corresponds to address lease information associated with the subscriber.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: May 27, 2008
    Assignee: Occam Networks, Inc.
    Inventors: Evan John Caves, Henri Altarac, Koral Ilgun