Communication detection device, method, and program for peer-to-peer communication

A communication detection method comprising:

• reading, by a processor, a communication log that records information concerning communication data exchanged between devices linked to a network, and dividing the communication log into parts corresponding to individual object devices based on a sender of the communication data and a destination recorded in the communication log;
• analyzing the parts of the divided communication log, extracting the communication data in which a connection request to each device has been issued, and generating a response success/failure table based on whether a response from the device that is an object of the connection request has been detected;
• and
• determining, based on the response success/failure table, when a time period in which no response is obtained from the device satisfies a criterion condition determined in advance, that peer-to-peer communication has been performed.

A computer-readable recording medium that records a program for causing a computer to execute a communication detection method, the method comprising:

• reading a communication log that records information concerning communication data exchanged between devices linked to a network, and dividing the communication log into parts corresponding to individual object devices based on a sender of the communication data and a destination recorded in the communication log;
• analyzing the parts of the divided communication log, extracting the communication data in which a connection request to each device has been issued, and generating a response success/failure table based on whether a response from the device that is the object of the connection request has been detected;
• and
• determining, based on the response success/failure table, when a time period in which no response is obtained from the device satisfies a criterion condition determined in advance, that peer-to-peer communication has been performed.