COMMUNICATION SECURITY SYSTEM

PROBLEM TO BE SOLVED: To provide a communication security system capable of surely preventing illegal intrusion to a server. SOLUTION: In order to solve the problem above, an actual operating server A and a virtual server B are connected to the Internet I, an illegal data identification and sorting means D is interposed between the actual operating server A and the virtual server B, and the Internet I, and the illegal data identification and sorting means D is characterized in to include: a function for identifying an illegal data pattern received via the Internet I to detect an illegal access; a function for transmitting the identified illegal data to the virtual server B; and a function for transmitting other data than the illegal data to the actual operating server A. COPYRIGHT: (C)2004,JPO