INFORMATION PROCESSING APPARATUS AND METHOD OF DETECTING PACKET

An information processing apparatus includes a processor configured to identify, upon acquiring a communication packet, a communication session based on information included in a header of the acquired communication packet. The processor is configured to determine whether first management information includes first acquisition information indicating that a communication packet corresponding to a packet identifier included in a header of the acquired communication packet has been acquired. The processor is configured to determine, upon determining that the first management information includes the first acquisition information, whether second management information includes second acquisition information indicating that a communication packet corresponding to a fragment offset included in a header of the acquired communication packet has been acquired. The processor is configured to discard the acquired communication packet upon determining that the second management information includes the second acquisition information.