Patents by Inventor Krishna Kurapati

Krishna Kurapati 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: 8407342
    Abstract: A method and system are provided for use in detecting and preventing attacks in a communications network. In one example, the method includes calculating first and second traffic volumes based on messages received at a first time and a second time, respectively. An average acceleration is calculated based on the first and second traffic volumes, and the method identifies whether the average acceleration has crossed a threshold. The messages are serviced only if the average acceleration has not crossed the threshold.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: March 26, 2013
    Assignee: Avaya Inc.
    Inventors: Krishna Kurapati, Sachin Purushottam Joglekar
  • Publication number: 20110173697
    Abstract: A method and system are provided for use in detecting and preventing attacks in a communications network. In one example, the method includes calculating first and second traffic volumes based on messages received at a first time and a second time, respectively. An average acceleration is calculated based on the first and second traffic volumes, and the method identifies whether the average acceleration has crossed a threshold. The messages are serviced only if the average acceleration has not crossed the threshold.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 14, 2011
    Applicant: Sipera Systems, Inc.
    Inventors: Krishna Kurapati, Sachin Joglekar
  • Patent number: 7933985
    Abstract: A method and system are provided for use in detecting and preventing attacks in a communications network. In one example, the method includes calculating first and second traffic volumes based on messages received at a first time and a second time, respectively. An average acceleration is calculated based on the first and second traffic volumes, and the method identifies whether the average acceleration has crossed a threshold. The messages are serviced only if the average acceleration has not crossed the threshold.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: April 26, 2011
    Assignee: Sipera Systems, Inc.
    Inventors: Krishna Kurapati, Sachin Joglekar
  • Publication number: 20070121596
    Abstract: The present invention provides a system, method and apparatus for providing network level and nodal level vulnerability protection in VoIP networks by receiving a communication, filtering the received communication using three or more stages selected from the group comprising a media protection and filtering plane, a policy based filtering plane, a signature based filtering plane, a protocol anomaly detection and filtering plane and a behavioral learning based filtering plane, and either allowing or denying the received communication based the filtering step. The stages are applicable to one or more protocols including SIP, IMS, UMA, H.248, H.323, RTP, CSTA/XML or a combination thereof. In addition, the stages can be implemented within a single device or are distributed across a network (e.g., SIP network, a UMA network, an IMS network or a combination thereof).
    Type: Application
    Filed: August 9, 2006
    Publication date: May 31, 2007
    Applicant: Sipera Systems, Inc.
    Inventors: Krishna Kurapati, Sachin Joglekar, Venkatesan Iyengar Prasanna, Satyam Tyagi, Guru Thodime, Pravin Khandelwal, Chandrasekhar Manchenella, Mukesh Singh, Raghavendra Thodime
  • Publication number: 20070076853
    Abstract: The present invention provides a system, method and apparatus for automatically classifying voice communications, such as voice messages and phone calls in prerecorded voicemails (one speaker) and two-way conversations, as either spam or legitimate signals in a communications system (e.g., SIP, IMS, UMA, etc.). More specifically, the present invention classifies a voice communication session by receiving one or more voice communication packets associated with the voice communication session, extracting one or more properties from the received voice communication packets and classifying the voice communication session based on the extracted properties. The present invention can also be implemented as a computer program embodied on a computer readable medium wherein each step is performed by one or more code segments.
    Type: Application
    Filed: September 14, 2006
    Publication date: April 5, 2007
    Applicant: Sipera Systems, Inc.
    Inventors: Krishna Kurapati, Nathaniel Ayewah
  • Publication number: 20060036727
    Abstract: A method and system are provided for use in detecting and preventing attacks in a communications network. In one example, the method includes calculating first and second traffic volumes based on messages received at a first time and a second time, respectively. An average acceleration is calculated based on the first and second traffic volumes, and the method identifies whether the average acceleration has crossed a threshold. The messages are serviced only if the average acceleration has not crossed the threshold.
    Type: Application
    Filed: August 13, 2004
    Publication date: February 16, 2006
    Applicant: Sipera Systems, Inc.
    Inventors: Krishna Kurapati, Sachin Joglekar