Method, program and system for limiting I/O access of client
First Claim
1. A method of limiting Input/Output (I/O) access of a client connected to a server via a network, the method comprising the steps of:
- locking I/O access of a client;
determining whether said client is connectable to a server via a network;
in response to a determination of said client being connectable in said determining step, unlocking I/O access of said client in a first unlocking step by authenticating said client by said server; and
in response to a determination of said client not being connectable in said determining step, unlocking I/O access of said client in a second unlocking step by connecting a portable authentication device to said client to authenticate said client by said portable authentication device.
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Accused Products
Abstract
A method of limiting I/O access of a client to prevent data in a client connected to the system from being leaked and stolen, the method further canceling the limitation under a predetermined condition even if the client can not communicate with a server is provided. The method comprising the steps of locking I/O access of the client, determining whether the client is connectable to the server via a network, unlocking I/O access of the client in response to a determination of the client being connectable, by authenticating the client by the server, and unlocking I/O access of the client in response to the client not being connectable, by connecting a portable authentication device to the client to authenticate the client by the portable authentication device.
78 Citations
17 Claims
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1. A method of limiting Input/Output (I/O) access of a client connected to a server via a network, the method comprising the steps of:
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locking I/O access of a client;
determining whether said client is connectable to a server via a network;
in response to a determination of said client being connectable in said determining step, unlocking I/O access of said client in a first unlocking step by authenticating said client by said server; and
in response to a determination of said client not being connectable in said determining step, unlocking I/O access of said client in a second unlocking step by connecting a portable authentication device to said client to authenticate said client by said portable authentication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A computer-usable medium embodying computer program code, the computer program code comprising computer executable instructions configured for:
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locking I/O access of a client;
determining whether said client is connectable to a server via a network;
in response to a determination of said client being connectable in said determining step, unlocking I/O access of said client in a first unlocking step by authenticating said client by said server; and
in response to a determination of said client not being connectable in said determining step, unlocking I/O access of said client in a second unlocking step by connecting a portable authentication device to said client to authenticate said client by said portable authentication device. - View Dependent Claims (14)
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15. A client control system for limiting I/O access of a client connected a server via a network, wherein:
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said client comprises an I/O access locking unit for locking I/O access of said client, a communication unit for determining whether said client is connectable to said server via said network and accessing to said server in response to a determination of said client being connectable, and a first unlocking unit for unlocking I/O access of said client in response to a determination of said client not being connectable and in response to a determination of said portable authentication device being connected, by authenticating said client by said portable authentication device; and
said server comprises a second unlocking unit for unlocking I/O access of said client in response to the access from said client, by authenticating said client. - View Dependent Claims (16, 17)
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Specification