APPARATUS FOR PREVENTING ILLEGAL ACCESS OF INDUSTRIAL CONTROL SYSTEM AND METHOD THEREOF
First Claim
1. An apparatus for preventing illegal access of industrial control system, comprising:
- a first interface communicating a packet by interoperating with a management network group that requests a control command;
a second interface communicating a packet by interoperating with a control network group that receives a control command from the management network group and processes it; and
a control device, which, when a packet flows therein from the management network group or the control network group, checks whether or not at least one filter rule is set and controls the packet flow between the management network group and the control network group using the filter where the rule is set.
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Accused Products
Abstract
Disclosed is an apparatus for preventing illegal access of industrial control system and a method thereof in accordance with the present invention. The apparatus for preventing illegal access of industrial control system includes: a first interface communicating a packet by interoperating with a management network group that requests a control command; a second interface communicating a packet by interoperating with a control network group that receives a control command from the management network group and processes it; and a control device, which, when a packet flows therein from the management network group or the control network group, checks whether or not at least one filter rule is set and controls the packet flow between the management network group and the control network group using the filter where the rule is set.
25 Citations
16 Claims
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1. An apparatus for preventing illegal access of industrial control system, comprising:
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a first interface communicating a packet by interoperating with a management network group that requests a control command; a second interface communicating a packet by interoperating with a control network group that receives a control command from the management network group and processes it; and a control device, which, when a packet flows therein from the management network group or the control network group, checks whether or not at least one filter rule is set and controls the packet flow between the management network group and the control network group using the filter where the rule is set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for preventing illegal access of industrial control system, comprising:
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checking if a packet is received from a management network group which requests a control command or a control network group which receives and processes the control command; checking whether or not at least one filter rule exists if the packet is received either from the management network group or the control network group; and controlling a packet flow between the management network group and the control network group using a filter where the rule is set. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification