Patents by Inventor Tzong-Fen Fuh

Tzong-Fen Fuh 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).

  • Local authentication of a client at a network device
    Patent number: 7506054
    Abstract: A method and apparatus that provide network access control are disclosed. In one embodiment, a network device is configured to intercept network traffic initiated from a client and directed toward a network resource, and to locally authenticate the client. Authentication is carried out by comparing information identifying the client to authentication information stored in the network device. In one embodiment, an authentication cache in the network device stores the authentication information. If the client identifying information is authenticated successfully against the stored authentication information, the network device is dynamically re-configured to allow network traffic initiated by the client to reach the network resource. If local authentication fails, new stored authentication is created for the client, and the network device attempts to authenticate the client using a remote authentication server.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: March 17, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Tzong-Fen Fuh, Serene H. Fan, Diheng Qu
  • Local authentication of a client at a network device
    Patent number: 6609154
    Abstract: A method and apparatus that provide network access control are disclosed. In one embodiment, a network device is configured to intercept network traffic initiated from a client and directed toward a network resource, and to locally authenticate the client. Authentication is carried out by comparing information identifying the client to authentication information stored in the network device. In one embodiment, an authentication cache in the network device stores the authentication information. If the client identifying information is authenticated successfully against the stored authentication information, the network device is dynamically re-configured to allow network traffic initiated by the client to reach the network resource. If local authentication fails, new stored authentication is created for the client, and the network device attempts to authenticate the client using a remote authentication server.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: August 19, 2003
    Assignee: Cisco Technology, Inc.
    Inventors: Tzong-Fen Fuh, Serene H. Fan, Diheng Qu
  • Local authentication of a client at a network device
    Patent number: 6463474
    Abstract: A method and apparatus that provide network access control are disclosed. In one embodiment, a network device is configured to intercept network traffic initiated from a client and directed toward a network resource, and to locally authenticate the client. Authentication is carried out by comparing information identifying the client to authentication information stored in the network device. In one embodiment, an authentication cache in the network device stores the authentication information. If the client identifying information is authenticated successfully against the stored authentication information, the network device is dynamically re-configured to allow network traffic initiated by the client to reach the network resource. If local authentication fails, new stored authentication is created for the client, and the network device attempts to authenticate the client using a remote authentication server.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: October 8, 2002
    Assignee: Cisco Technology, Inc.
    Inventors: Tzong-Fen Fuh, Serene H. Fan, Diheng Qu