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1. (WO2018066228) FLOW INFORMATION ANALYSIS APPARATUS, FLOW INFORMATION ANALYSIS METHOD, AND FLOW INFORMATION ANALYSIS PROGRAM

Pub. No.:    WO/2018/066228    International Application No.:    PCT/JP2017/028940
Publication Date: Fri Apr 13 01:59:59 CEST 2018 International Filing Date: Thu Aug 10 01:59:59 CEST 2017
IPC: H04L 12/70
Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
日本電信電話株式会社
Inventors: KURAKAMI, Hiroshi
倉上 弘
KAMIYA, Kazunori
神谷 和憲
NOOKA, Hiroyuki
野岡 弘幸
NATSUME, Daigo
夏目 大伍
Title: FLOW INFORMATION ANALYSIS APPARATUS, FLOW INFORMATION ANALYSIS METHOD, AND FLOW INFORMATION ANALYSIS PROGRAM
Abstract:
A flow information analysis apparatus (10) receives flow information that includes a header sample, determines whether or not the header sample of the flow information matches one of templates based on a tunneling protocol, and extracts information relating to a header of an IP packet from the header sample on the basis of the matched template when it is determined that the header sample matches one of the templates. The flow information analysis apparatus (10) extracts the information relating to the header of the IP packet from the header sample on the basis of the result of searching the header sample for a byte sequence matched with search data combining a value set in a specific field of the IP packet with a value set in a specific field of a tunnel header when it is determined that the header sample does not match any of the templates.