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).
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Patent number: 10205738Abstract: 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: GrantFiled: July 12, 2016Date of Patent: February 12, 2019Assignee: Cisco Technology, Inc.Inventors: Sindhu Subramanya, Anand Pulicat Gopalakrishnan, Payal Shah Rambhia, Amey Magar, Lio Cheng, Ningjia Huang
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Publication number: 20180020017Abstract: 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: ApplicationFiled: July 12, 2016Publication date: January 18, 2018Inventors: Sindhu Subramanya, Anand Pulicat Gopalakrishnan, Payal Shah Rambhia, Amey Magar, Lio Cheng, Ningjia Huang
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Patent number: 8780731Abstract: 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: GrantFiled: March 14, 2013Date of Patent: July 15, 2014Assignee: Cisco Technology, IncInventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
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Patent number: 8400929Abstract: 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: GrantFiled: May 26, 2011Date of Patent: March 19, 2013Assignee: Cisco Technology, Inc.Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
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Patent number: 8056132Abstract: 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: GrantFiled: October 29, 2008Date of Patent: November 8, 2011Assignee: Trend Micro IncorporatedInventors: Ming-Tai Chang, Jui-Pang Casper Wang, Lio Cheng, Kuan-Hua Chen
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Publication number: 20110228679Abstract: 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: ApplicationFiled: May 26, 2011Publication date: September 22, 2011Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
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Patent number: 7957295Abstract: 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: GrantFiled: November 2, 2007Date of Patent: June 7, 2011Assignee: Cisco Technology, Inc.Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
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Publication number: 20090116497Abstract: 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: ApplicationFiled: November 2, 2007Publication date: May 7, 2009Applicant: Cisco Technology, Inc. (CA Corporation)Inventors: Vishnu Kant Varma, Wenwei Weng, Samer Salam, Lio Cheng
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Patent number: 7328268Abstract: 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: GrantFiled: October 26, 2001Date of Patent: February 5, 2008Assignee: Cisco Technology, Inc.Inventors: Richard Foltak, Lio Cheng
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Patent number: 7293096Abstract: 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: GrantFiled: September 28, 2001Date of Patent: November 6, 2007Assignee: Cisco Technology, Inc.Inventors: Richard Foltak, Lio Cheng