Patents by Inventor Junzheng Zhang

Junzheng Zhang 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).

  • Patent number: 7840701
    Abstract: A system and method for virtual private network (VPN) packet level routing using a Dual-NAT architecture to provide a bi-directional secure connection between applications, hosts, or networks at any two end sites without exposing each other's actual IP addresses and network topologies. The method includes providing a client a list of available resources on a remote network; initiating a request by the client for at least one resource from the list of available remote resources as though the at least one resource is local to the client; NATting the source and destination IP addresses to a pair of client and resource Dynamic VPN (DVPN) addresses; routing the request to the remote network; NATting the client and resource DVPN addresses to local IP addresses on the remote network; issuing the request to the at least resource; and NATting/routing the response using the reverse process.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: November 23, 2010
    Assignee: Array Networks, Inc.
    Inventors: Nai-Ting Hsu, Junzheng Zhang, Zhuoyuan Chai, Leemay Yen, Pu-Chau Hsu
  • Publication number: 20080201486
    Abstract: A system and method for virtual private network (VPN) packet level routing using a Dual-NAT architecture to provide a bidirectional secure connection between applications, hosts, or networks at any two end sites without exposing each other's actual IP addresses and network topologies. The method includes providing a client a list of available resources on a remote network; initiating a request by the client for at least one resource from the list of available remote resources as though the at least one resource is local to the client; NATting the source and destination IP addresses to a pair of client and resource Dynamic VPN (DVPN) addresses; routing the request to the remote network; NATting the client and resource DVPN addresses to local IP addresses on the remote network; issuing the request to the at least resource; and NATting/routing the response using the reverse process.
    Type: Application
    Filed: February 21, 2007
    Publication date: August 21, 2008
    Applicant: Array Networks, Inc.
    Inventors: Nai-Ting Hsu, Junzheng Zhang, Zhuoyuan Chai, Leemay Yen, Pu-Chau Hsu