APPARATUS FOR PREVENTING ILLEGAL ACCESS OF INDUSTRIAL CONTROL SYSTEM AND METHOD THEREOF

摘要

Disclosed are an apparatus for preventing an unauthorized access to an industrial control system and a method thereof. The apparatus for preventing an unauthorized access to an industrial control system according to the present invention comprises a first interface transmitting and receiving packets by interworking with a management network group requesting a control command; a second interface transmitting and receiving packets by interworking with a control network group receiving a control command from the management network group and processing the received control command; and a control unit determining whether a rule has been set for at least one filter when a packet is introduced 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 by using a corresponding filter with the preset rule according to the determination result.