• 한국컴퓨터정보학회논문지
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• 제22권4호
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• pp.75-82
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• 2017

While the internet has evolved in terms of information sharing and efficiency, it is still prone to security attacks and remains vulnerable even when equipped with a security mechanism. Repeated patching against hacks involves excessive wear of system equipment and high costs. Methods of improving network security include the introduction of security equipment and network partitions, but they have not been fully effective. A fundamental solution is the Operation Content Network (OCN), which enables the strengthening of authentication. In this paper, Instead of following the existing TCP/IP system, OCN establishes an immunity-based security system through content-centric communications. Data transmission occurs over a Content Centric Network (CCN), which is provided with a protocol verified by the CCNx group. Areas protected by OCN rely only on CCN for communication without using any IP. As such, it defends the system against unknown attacks, including zero-day attacks.

• 디지털산업정보학회논문지
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• 제12권3호
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• pp.75-85
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• 2016

MANET is a network composed only mobile network having limited resources and has dynamic topology characteristics. Therefore, every mobile node acts as a route and delivers data by using multi-hop method. In particular, group communication such as multicast is desperately needed because of characteristics such as battery life of limited wireless bandwidth and mobile nodes. However, the multicast technique can have different efficient of data transmission according to configuring method of a virtual topology by the movement of the nodes and the performance of a multicast can be significantly degraded. In this paper, the region based security multicast technique is proposed in order to increase the efficiency of data transmission by maintaining an optimal path and enhance the security features in data transmission. The group management node that manages the state information of the member nodes after the whole network is separated to area for efficient management of multicast member nodes is used. Member node encrypts using member key for secure data transmission and the security features are strengthened by sending the data after encrypted using group key in group management node. The superiority of the proposed technique in this paper was confirmed through experiments.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제10권2호
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• pp.199-208
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• 2004

본 논문에서는 각 센서에서 수집한 수 많은 경고 메시지중에서 불필요한 정보는 필터링하여, 위험 상태를 크게 4가지의 유형으로 분류하는 SIA 시스템을 제안하고 구현하였다. 또한 제안한 방법을 실제 환경에서 구현하여 현장에서 적용해 본 결과, 실시간으로 이루어지는 네트워크의 위험요소 판정에 도움을 줌으로써 보안관리자가 실질적인 위협에 즉각적으로 대처 할 수 있음을 확인하였다.

• International Journal of Computer Science & Network Security
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• 제23권11호
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• pp.1-7
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• 2023

In the current Internet system, there are many problems using anonymity of the network communication such as personal information leaks and crimes using the Internet system. This is why TCP/IP protocol used in Internet system does not have the user identification information on the communication data, and it is difficult to supervise the user performing the above acts immediately. As a study for solving the above problem, there is the study of Policy Based Network Management (PBNM). This is the scheme for managing a whole Local Area Network (LAN) through communication control for every user. In this PBNM, two types of schemes exist. As one scheme, we have studied theoretically about the Destination Addressing Control System (DACS) Scheme with affinity with existing internet. By applying this DACS Scheme to Internet system management, we will realize the policy-based Internet system management. In this paper, basic system design for PBNM scheme for multi-domain management utilizing data science and AI is proposed.

• 정보보호학회논문지
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• 제34권1호
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• pp.21-29
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• 2024

ICT와 network의 발달로 규모가 커진 IT 인프라의 보안 관리가 매우 어려워지고 있다. 많은 회사나 공공기관에서 시스템과 네트워크 보안 관리에 어려움을 겪고 있다. 또한 하드웨어와 소프트웨어의 복잡함이 커짐에 따라 사람이 모든 보안을 관리한다는 것은 불가능에 가까워지고 있다. 따라서 네트워크 보안 관리에 AI가 필수적이다. 하지만 실제 네트워크 환경에 공격 모델을 구동하는 것은 매우 위험하기에 실제와 유사한 네트워크 환경을 구현하여 강화학습을 통해 사이버 보안 시뮬레이션 연구를 진행하였다. 이를 위해 본 연구는 강화학습을 네트워크 환경에 적용하였고, 에이전트는 학습이 진행될수록 해당 네트워크의 취약점을 정확하게 찾아냈다. AI를 통해 네트워크의 취약점을 발견하면, 자동화된 맞춤 대응이 가능해진다.

• 융합보안논문지
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• 제2권2호
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• pp.9-17
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• 2002

트래픽 엔지니어링 기능은 트래픽 관리(Traffic Management), 용량 관리(Capacity Management), 그리고 네트워크 계획(Network Planning) 등을 포함한다. 본 논문에서는 트래픽 엔지니어링의 각각의 기능에 대해 설명하며, 멀티미디어 인터넷 망에서의 효율적인 트래픽 엔지니어링을 위한 기능 및 프로세스 모델을 제시하고 각 단계에서 필요한 구체적인 트래픽 관리방안을 소개한다.

• 디지털산업정보학회논문지
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• 제11권1호
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• pp.69-78
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• 2015

Internet of Things(IoT) is electronic devices and household appliances use wireless sensor network in environment of high speed wireless network and LTE mobile service. The combination of the development of Internet and wireless network led to development of new forms of service such as electronic devices and household appliances can connect to the Internet through various sensors and online servers such as a Home Network. Even though Internet of Things is useful, there are problems in Internet of Things. In environment of Internet of Things, information leakage could happens by illegal eavesdropping and spoofing. Also illegal devices of wireless communication interference can cause interfere in Internet of things service, physical damage and denial of service by modulation of data and sensor. In this thesis, it will analyze security threats and security vulnerability in environment of mobile services and smart household appliances, then it will suggest plan. To solve security issues, it is important that IT and RFID sensor related companies realize importance of security environment rather than focus on making profit. It is important to develop the standardized security model that applies to the Internet of Things by security-related packages, standard certification system and strong encrypted authentication.

• 디지털산업정보학회논문지
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• 제11권4호
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• pp.47-60
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• 2015

In this paper, we propose a simple and useful method using a port role to visualize the network attacks. The port role defines the behavior of the port from the source and destination port number of network session. Based on the port role, the port provides the brief security features of each node as an attacker, a victim, a server, and a normal host. We have automatically classified and identified the type of node based on the port role and security features. We detected and visualized the network attacks using these features of the node by the port role. In addition, we are intended to solve the problems with existing visualization technologies which are the reflection problem caused an undirected network session and the problem caused decreasing of distinct appearance when occurs a large amount of the sessions. The proposed method monitors anomalies occurring in an entire network and displays detailed information of the attacker, victim, server, and hosts. In addition, by providing a categorized analysis of network attacks, this method can more precisely detect and distinguish them from normal sessions.

• Journal of Computing Science and Engineering
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• 제4권1호
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• pp.23-51
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• 2010

Wireless Sensor Networks (WSN) have proved to be useful in applications that involve monitoring of real-time data. There is a wide variety of monitoring applications that can employ Wireless Sensor Network. Characteristics of a WSN, such as topology and scale, depend upon the application, for which it is employed. Security requirements in WSN vary according to the application dependent network characteristics and the characteristics of an application itself. Key management is the most important aspect of security as some other security modules depend on it. We discuss application dependent variations in WSN, corresponding changes in the security requirements of WSN and the applicability of existing key management solutions in each scenario.

• 융합정보논문지
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• 제11권10호
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• pp.144-150
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• 2021

본 논문의 연구목적은 5G 통신네트워크 보안에서 표준화가 진행되고 있는 상황에서 주요 고려 사항인 슬라이싱 보안 정책에 대한 방향을 검토하고, 5G 통신 네트워크 가상화의 보안 취약점 진단 항목들을 도출하며, 위험관리에 대한 주요 논의 사항들을 분석하고 제시하는데 있다. 연구방법은 유럽 핵심보안 연구기관인 ENISA(European Union Agency for Cybersecurity)의 5G 통신네트워크의 가상화 보안 정책 방향과, 국외 주요 관련 저널로부터 5G 통신네트워크의 가상화 보안정책과 취약점 분석 등의 연구 내용을 분석에 활용하였다. 본 논문의 연구 결과에서는 5G 통신 네트워크의 가상화 보안에서 보안구조를 정리하였고, 보안 위협들과 위험관리 요소를 도출하였다. 또한 위험관리 영역에서 보안 서비스별로 취약점 진단 항목들을 도출하였다. 본 연구의 기여도는 여전히 논의 되고 있는 5G 통신 네트워크 가상화 보안에서 보안 위협 항목들을 요약하였다는 것과, 유럽의 5G 통신네트워크 사이버보안 방향을 파악 할 수 있었다는 것, 그리고 5G 통신 네트워크의 가상화 보안에 고려되어야 하는 취약점 진단 항목들을 도출하였다는 데 있다. 아울러 본 연구의 결과는 국내 5G 통신네트워크 가상화 보안을 위한 취약점 진단 항목들을 개발하는데 기초 자료로 활용 될 수 있다. 향후 5G 통신네트워크 가상화 보안의 취약점 진단 항목에 대한 상세한 진단 프로세스를 연구하는 것이 필요하다.