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Authors: Yuya Sato 1 ; Hirokazu Hasegawa 2 and Hiroki Takakura 3

Affiliations: 1 Graduate School of Informatics, Nagoya University and Japan ; 2 Information Strategy Office, Nagoya University and Japan ; 3 Center for Cybersecurity Research and Development, National Institute of Informatics and Japan

Keyword(s): Targeted Attacks, Network Separation, Access Control.

Abstract: Recent sophistication of cyber attacks makes us difficult to protect our networks completely. Because dedicated malwares that targeted cyber attacks use may slip through traditional countermeasures like firewalls or intrusion detection systems. Separated network (e.g., separating network into several segments and controlling access among sub-networks.) is one of effective countermeasure against targeted attacks. In order to support constructing separated networks, we have proposed automated ACL generation system previously. However, the system may overly permit communication because it focuses on business continuity. In this paper, we propose a Communication Classifying System for constructing secure internal networks. When a communication occurs in a section previous system permitted, the proposed system analyzes it. The system evaluates consistency of communication by comparing communication and reason that previous system permitted such communication. If a communication which lack s consistency is detected, the system additionally analyzes it. In this additional analysis, the system checks states of destination terminals. If a destination terminal is listening port for protocol of occurred communication, the system judges such communication is proper. By using the result classification, we can prohibit the communication section that previous system overly permitted. (More)

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Paper citation in several formats:
Sato, Y.; Hasegawa, H. and Takakura, H. (2019). Construction of Secure Internal Networks with Communication Classifying System. In Proceedings of the 5th International Conference on Information Systems Security and Privacy - ICISSP; ISBN 978-989-758-359-9; ISSN 2184-4356, SciTePress, pages 552-557. DOI: 10.5220/0007571905520557

@conference{icissp19,
author={Yuya Sato. and Hirokazu Hasegawa. and Hiroki Takakura.},
title={Construction of Secure Internal Networks with Communication Classifying System},
booktitle={Proceedings of the 5th International Conference on Information Systems Security and Privacy - ICISSP},
year={2019},
pages={552-557},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007571905520557},
isbn={978-989-758-359-9},
issn={2184-4356},
}

TY - CONF

JO - Proceedings of the 5th International Conference on Information Systems Security and Privacy - ICISSP
TI - Construction of Secure Internal Networks with Communication Classifying System
SN - 978-989-758-359-9
IS - 2184-4356
AU - Sato, Y.
AU - Hasegawa, H.
AU - Takakura, H.
PY - 2019
SP - 552
EP - 557
DO - 10.5220/0007571905520557
PB - SciTePress

- Science and Technology Publications, Lda.
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