Patent ID: 11909747
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A network packet analyzer comprising:
a storage configured to store a plurality of sets of training data in which semantics of one protocol field and one or more first patterns for the one protocol field are associated with each other, the one protocol field being included in each of network packets to be received in time series, the one or more first patterns indicating different characteristics of variations of the parameters in parameter of the one protocol field among the network packets to be received in time series; and
one or more hardware processors configured to:
capture network packets in time series and extract variable fields whose parameters vary in time series among the captured network packets;
generate one or more second patterns indicating different characteristics of variations in parameter of the variable fields among the captured network packets; and
compare each of the one or more second patterns with each of the one or more first patterns of the training data and estimate semantics of the variable field.