Patents by Inventor Nirmalendu Das

Nirmalendu Das 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: 10764264
    Abstract: A technique for authenticating network users is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for authenticating network users. The method may comprise receiving, from a client device, a request for connection to a network. The method may also comprise evaluating a security context associated with the requested connection. The method may further comprise assigning the client device one or more access privileges based at least in part on the evaluation of the security context.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: September 1, 2020
    Assignee: Avaya Inc.
    Inventors: Ravi Chakravarthi Kumar, Tal I. Lavian, Vasant Sahay, Nirmalendu Das, Biju Sajibhavan Kunjukunju, David Burton Levi, Philippe Michelet, Shmuel Nehama
  • Patent number: 9743367
    Abstract: In one embodiment, a method for providing link layer discovery protocol (LLDP) to a distributed fabric includes sending a neighbor synchronization request message from a master node to one or more member nodes connected to the master node, the neighbor synchronization request message including a request for a recipient member node to send its LLDP neighbor information to the master node, receiving a neighbor synchronization update message at the master node from at least one of the one or more member nodes, the neighbor synchronization update message including information about local LLDP neighbors of the one or more member nodes, and storing the information about the local LLDP neighbors from the at least one of the one or more member nodes in a LLDP neighbors database of the master node.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: August 22, 2017
    Assignee: LENOVO ENTERPRISE SOLUTIONS (SINGAPORE) PTE. LTD.
    Inventors: Nirmalendu Das, Mark Q. Llacuna, Ravichandra B. Ryali
  • Publication number: 20160088578
    Abstract: In one embodiment, a method for providing link layer discovery protocol (LLDP) to a distributed fabric includes sending a neighbor synchronization request message from a master node to one or more member nodes connected to the master node, the neighbor synchronization request message including a request for a recipient member node to send its LLDP neighbor information to the master node, receiving a neighbor synchronization update message at the master node from at least one of the one or more member nodes, the neighbor synchronization update message including information about local LLDP neighbors of the one or more member nodes, and storing the information about the local LLDP neighbors from the at least one of the one or more member nodes in a LLDP neighbors database of the master node.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 24, 2016
    Inventors: Nirmalendu Das, Mark Q. Llacuna, Ravichandra B. Ryali
  • Patent number: 8958318
    Abstract: An apparatus and method for event-based data capture from network flows are provided. At a network device, a network flow is received that comprises a plurality of packets each comprising control information and data. The network flow is monitored for the occurrence of at least one predetermined triggering event. In response to detecting the triggering event, at least a portion of one or more of the packets received after the triggering event is captured, and the captured portion is exported to an analysis server. The network device may comprise any device configured to forward flows of packets such as, for example, switches, routers, firewalls, etc.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: February 17, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: John Hastwell, Marco E. Foschiano, Ravichandra Ryali, Nirmalendu Das
  • Patent number: 8707395
    Abstract: A technique for providing secure network access is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for providing secure network access. The method may comprise establishing a plurality of access zones in a network, wherein client devices assigned to different access zones have different access privileges and are isolated from one another. The method may also comprise assigning a client device to one of the plurality of access zones based on an assessment of a security context associated with the client device and a connection of the client device to the network.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: April 22, 2014
    Assignee: Avaya Inc.
    Inventors: Vasant Sahay, Biju Sajibhavan, Nirmalendu Das, Subhasree Mandal, David Burton Levi, Manoj Kumar Guglani, Philippe Michelet, Ravi Chakravarthi Kumar
  • Publication number: 20070169171
    Abstract: A technique for authenticating network users is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for authenticating network users. The method may comprise receiving, from a client device, a request for connection to a network. The method may also comprise evaluating a security context associated with the requested connection. The method may further comprise assigning the client device one or more access privileges based at least in part on the evaluation of the security context.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 19, 2007
    Inventors: Ravi Kumar, Tal Lavian, Vasant Sahay, Nirmalendu Das, Biju Kunjukunju, David Levi, Philippe Michelet
  • Publication number: 20070011725
    Abstract: A technique for providing secure network access is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for providing secure network access. The method may comprise establishing a plurality of access zones in a network, wherein client devices assigned to different access zones have different access privileges and are isolated from one another. The method may also comprise assigning a client device to one of the plurality of access zones based on an assessment of a security context associated with the client device and a connection of the client device to the network.
    Type: Application
    Filed: December 30, 2005
    Publication date: January 11, 2007
    Inventors: Vasant Sahay, Biju Kunjukunju, Nirmalendu Das, Subhasree Mandal, David Levi, Manoj Guglani, Philippe Michelet, Ravi Kumar