Patents by Inventor Serene H. Fan

Serene H. Fan 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: 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
  • 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
  • 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
  • Patent number: 5805819
    Abstract: A method and apparatus are provided for grouping the network entities that belong to a network system into logical groups, and generating a display of the network based on the logical groups. In the highest level display, a single visual indicator, such as an icon, is used to represent each logical group. Thus, a display of the entire network system need only contain as many visual indicators as there are logical groups. Typically, the number of logical groups will be significantly less than the number of actual network resources. Consequently, entire large network systems may be displayed without crowding the display screen with small, difficult to read icons. The logical groups are formed based on the type of connections that exist between the various logical entities in the network. Site groups are formed by combining all local area network connections that connection common network entities. Region groups are formed by combining all wide area network connections that connect common network entities.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: September 8, 1998
    Assignee: Bay Networks, Inc.
    Inventors: Jeffrey A. Chin, Frank S. Lee, Leon Y. K. Leong, Serene H. Fan