Disclosed herein are systems, methods and products for interpreting and structuring free text records utilizing extractions of several types including syntactic, role, thematic and domain extractions. A forwarding system adds to the class for each virtual function a forwarding implementation of that virtual function. The segments 2 includes a specific segment 2X having properties different from those of general segments 2a other than the specific segment 2X, and additional plugged portions 8 are disposed in the unplugged opening end portions 7 which are not plugged among cells of the specific segment, thereby at least a part of exhaust gas flow is suppressed. If the intrusion is determined to be non-malicious, then the machine is functionally reconnected to the server farm, and the machine is reprovisioned to a state held before the reprovisioning of the machine as a decoy machine.