Patents by Inventor Ajit Clarence D'Sa

Ajit Clarence D'Sa 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: 6938155
    Abstract: A system and method for providing multiple virtual private networks from a computer system. The computer system communicates with a remote computer system in order to allow encrypted data traffic to flow between the respective systems. Two phases are used to authenticate the computer systems to one another. During the first phase, digital certificates or pre-shared keys are used to authenticate the computer systems. A phase 1 ID rules list contains authentication rules for local-remote computer pairs. During the second phase, a hash value is used to authenticate the computer systems and a security association payload is created. The remote system's IP address is used for connecting. The phase 1 ID rules list corresponds to one or more phase 2 ID rules lists. If the remote ID is not found in the phase 2 ID rules list, a default rule is used based upon the phase 1 ID rules list.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: August 30, 2005
    Assignee: International Business Machines Corporation
    Inventors: Ajit Clarence D'Sa, William Alton Fiveash, Denise Marie Genty, Guha Prasad Venkataraman, Jacqueline Hegedus Wilson
  • Patent number: 6823462
    Abstract: A method, network system and computer program product for establishing a server node in a virtual private network with a single tunnel definition and a single security policy for a plurality of tunnels associated with a group name. In one embodiment, a method comprises the step of configuring a group database in the server node. The group database in the server node comprises the group name and a list of members associated with the group name. The method further comprises configuring a rules database in the server node. The rules database associates the group name with a particular security policy. The method further comprises configuring a tunnel definition database in the server node. In the tunnel definition database, the remote ID is defined as the group name. In another embodiment of the present invention, the list of members associated with the group name comprises a non-contiguous list of ID types.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: November 23, 2004
    Assignee: International Business Machines Corporation
    Inventors: Pau-Chen Cheng, Ajit Clarence D'Sa, Jian Hua Feng, Denise Marie Genty, Jacqueline Hegedus Wilson
  • Publication number: 20020178355
    Abstract: A system and method for providing multiple virtual private networks from a computer system. The computer system communicates with a remote computer system in order to allow encrypted data traffic to flow between the respective systems. Two phases are used to authenticate the computer systems to one another. During the first phase, digital certificates or pre-shared keys are used to authenticate the computer systems. A phase 1 ID rules list contains authentication rules for local-remote computer pairs. During the second phase, a hash value is used to authenticate the computer systems and a security association payload is created. The remote system's IP address is used for connecting. The phase 1 ID rules list corresponds to one or more phase 2 ID rules lists. If the remote ID is not found in the phase 2 ID rules list, a default rule is used based upon the phase 1 ID rules list.
    Type: Application
    Filed: May 24, 2001
    Publication date: November 28, 2002
    Applicant: International Business Machines Corporation
    Inventors: Ajit Clarence D'Sa, William Alton Fiveash, Denise Marie Genty, Guha Prasad Venkataraman, Jacqueline Hegedus Wilson