Patents by Inventor Ashok Thirunarayanan

Ashok Thirunarayanan 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).

  • DNS snooping to create IP address-based trust database used to select deep packet inspection and storage of IP packets
    Patent number: 9628442
    Abstract: At a network device through which client devices communicate with a network, a database is created that maps Internet Protocol (IP) addresses each to a respective trust metric for a domain name associated with the IP address. An IP packet sent from a client device to the network and that indicates a destination IP address for a network-accessible resource associated with a domain name is intercepted. Using the destination IP address in the intercepted IP packet, the domain name trust metric mapped to the destination IP address is retrieved from the database. IP packets received from the destination IP address are processed based on the retrieved domain name trust metric and a predetermined trust metric criterion.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: April 18, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Peter Zhu, Ashok Thirunarayanan
  • DNS SNOOPING TO CREATE IP ADDRESS-BASED TRUST DATABASE USED TO SELECT DEEP PACKET INSPECTION AND STORAGE OF IP PACKETS
    Publication number: 20160373409
    Abstract: At a network device through which client devices communicate with a network, a database is created that maps Internet Protocol (IP) addresses each to a respective trust metric for a domain name associated with the IP address. An IP packet sent from a client device to the network and that indicates a destination IP address for a network-accessible resource associated with a domain name is intercepted. Using the destination IP address in the intercepted IP packet, the domain name trust metric mapped to the destination IP address is retrieved from the database. IP packets received from the destination IP address are processed based on the retrieved domain name trust metric and a predetermined trust metric criterion.
    Type: Application
    Filed: June 22, 2015
    Publication date: December 22, 2016
    Inventors: Peter Zhu, Ashok Thirunarayanan