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Detection of Abnormal Traffic by Pre-Inflow Agent

사전유입 에이전트가 발생하는 이상트래픽 탐지 방안

  • Cho, Young Min (Graduate School of Information Security, Korea University) ;
  • Kwon, Hun Yeong (Graduate School of Information Security, Korea University)
  • 조영민 (고려대학교 정보보호대학원) ;
  • 권헌영 (고려대학교 정보보호대학원)
  • Received : 2018.07.17
  • Accepted : 2018.09.13
  • Published : 2018.10.31

Abstract

Modern society is a period of rapid digital transformation. This digital-centric business proliferation offers convenience and efficiency to businesses and individuals, but cyber threats are increasing. In particular, cyber attacks are becoming more and more intelligent and precise, and various attempts have been made to prevent these attacks from being discovered. Therefore, it is increasingly difficult to respond to such attacks. According to the cyber kill chain concept, the attacker penetrates to achieve the goal in several stages. We aim to detect one of these stages and neutralize the attack. In this paper, we propose a method to detect anomalous traffic caused by an agent attacking an external attacker, assuming that an agent executing a malicious action has been introduced in advance due to various reasons such as a system error or a user's mistake.

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Fig. 1. Related Research Field

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Fig. 2. Irregular Iteration Access

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Fig. 3. Flow-chart(Irregular Iteration Access)

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Fig. 4. Multiple Access

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Fig. 5. Flow-chart(Multiple Access)

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Fig. 6. Bypass Attempt Access

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Fig. 7. Flow-chart(Bypass Attempt Access)

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Fig. 8. Experiment Environment

Table 1. Selected Header Field

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Table 2. Result of Verification

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