Patents by Inventor Lio Cheng

Lio Cheng 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: 10205738
    Abstract: A method is presented in which a system reduces the risk of an advanced persistent threat (“APT”) detected at one or more network devices by implementing one or more mitigation actions depending on the nature of the detected threat. Accordingly, in response to detecting the risk of an APT at one or more network devices, a centralized controller implements one or more mitigation actions to minimize the vulnerability of an enterprise network to unauthorized access to one or more network resources. A centralized controller may therefore instruct one or more network devices to take appropriate mitigation actions depending on the nature of an APT detected on one or more network devices.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: February 12, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Sindhu Subramanya, Anand Pulicat Gopalakrishnan, Payal Shah Rambhia, Amey Magar, Lio Cheng, Ningjia Huang
  • Publication number: 20180020017
    Abstract: A method is presented in which a system reduces the risk of an advanced persistent threat (“APT”) detected at one or more network devices by implementing one or more mitigation actions depending on the nature of the detected threat. Accordingly, in response to detecting the risk of an APT at one or more network devices, a centralized controller implements one or more mitigation actions to minimize the vulnerability of an enterprise network to unauthorized access to one or more network resources. A centralized controller may therefore instruct one or more network devices to take appropriate mitigation actions depending on the nature of an APT detected on one or more network devices.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 18, 2018
    Inventors: Sindhu Subramanya, Anand Pulicat Gopalakrishnan, Payal Shah Rambhia, Amey Magar, Lio Cheng, Ningjia Huang
  • Patent number: 8780731
    Abstract: One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 15, 2014
    Assignee: Cisco Technology, Inc
    Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
  • Patent number: 8400929
    Abstract: One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: March 19, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
  • Patent number: 8056132
    Abstract: Software robots (“bots”) may be detected in a client computer using a client-side bot detector. The client-side bot detector may be configured to receive bot event profiles indicating IP (Internet Protocol) addresses involved in malicious online activities perpetrated by bots and time frames when the malicious online activities occurred. The client-side bot detector may determine dynamic IP addresses that have been dynamically assigned to the client computer by consulting a dynamic IP assignment profile of the client computer. The client-side bot detector may compare the bot event profiles against the dynamic IP assignment profile of the client computer to determine if the client computer is infected by a bot.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: November 8, 2011
    Assignee: Trend Micro Incorporated
    Inventors: Ming-Tai Chang, Jui-Pang Casper Wang, Lio Cheng, Kuan-Hua Chen
  • Publication number: 20110228679
    Abstract: One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 22, 2011
    Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
  • Patent number: 7957295
    Abstract: One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: June 7, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
  • Publication number: 20090116497
    Abstract: One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 7, 2009
    Applicant: Cisco Technology, Inc. (CA Corporation)
    Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
  • Patent number: 7328268
    Abstract: A method, system, and apparatus are provided for maintaining a common unique session identifier for a call over a network. In at least one embodiment, a unique session identifier is created by appending the IP address of an access server to a local session identifier.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: February 5, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Richard Foltak, Lio Cheng
  • Patent number: 7293096
    Abstract: A method, system, and apparatus are provided for maintaining a common session identifier for a call over a network. In at least one embodiment, the session identifier is provided as a non-required parameter in accordance with a tunnel protocol.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: November 6, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Richard Foltak, Lio Cheng