• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.1C
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• pp.37-46
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• 2003

As Information Security Technology has become rather transparent, wide, and integrated than in part, exclusive, and separated, A necessity of the study about integrating the separated distributed security systems into one module, has grown However, there is no integrated framework which can manage all separate security systems as one integrated one yet. Accordingly, we propose a new policy based network admirustrative model in this paper which can integrate individual security systems and distributed control way into one effectively.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.322-325
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• 2003

리눅스는 오픈 소스로서 관련 소프트웨어 비용이 거의 들지 않아 여러 대의 서버를 구축하는 데도 많은 비용 부담 없이 적기 때문에 리눅스를 이용한 다중 서버 사용이 점차 증가하고 있다 그러나, 다중 서버 사용 시 최적화된 서버관리와 인터넷상의 서버 노출에 따른 보안 등의 문제가 고려되어야 한다. 본 논문에서는 리눅스 커널(Kernel) 2.4 기반의 다중 리눅스 서버 구성에서 발생할 수 있는 부하분산(Load Balancing)과 보안상의 문제를 iptables의 패킷 필터링 및 방화벽 기능을 이용하여 효율적으로 운영할 수 있는 방법을 제시하고, 또한 공개용 침입탐지시스템인 snort를 이용한 통합 보안 시스템을 구현하고 그 활용방안을 제안하고자 한다.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.2
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• pp.60-69
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• 2013

Highlighted by recent security breaches including Google, Western Energy Company, and the Stuxnet infiltration of Iranian nuclear sites, Cyber warfare attacks pose a threat to national and global security. In particular, targeted attacks such as APT exploiting a high degree of stealthiness over a long period, has extended their victims from PCs and enterprise servers to government organizations and critical national infrastructure whereas the existing security measures exhibited limited capabilities in detecting and countermeasuring them. As a solution to fight against such attacks, we designed and implemented a security monitoring system, which shares security information and helps cooperative countermeasure. The proposed security monitoring system collects security event logs from heterogeneous security devices, analyses them, and visualizes the security status using 3D technology. The capability of the proposed system was evaluated and demonstrated throughly by deploying it under real network in a ISP for a week.

• Journal of the Korea Computer Industry Society
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• v.3 no.7
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• pp.953-956
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• 2002

The threat to the network is increasing due to explosive increasing use of the Internet. Current IDS(Intrusion Detection System) detects intrusion and does individual response in small area network. It is important that construction of infra to do response in all system environment through sharing information between different network domains. This paper provides a policy-based IDS management architecture enabling management of intrusion detection systems. The IIDS(Integrated Intrusion Detection System) is composed of IDAs(Intrusion Detection Agents). We describe requirements in design and the elements of function.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.638-639
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• 2013

Anymon Plus(ver 3.0)은 통합 로그 분석 시스템으로 대용량 로그 및 빅데이터의 실시간 수집 저장 분석할 수 있는 제품(초당 40,000 이벤트 처리)으로서, 방화벽 로그 분석을 통한 비정상 네트워크 행위 탐지, 웹 로그 분석을 통한 사용 패턴 분석, 인터넷 쇼핑몰 사기 주문 분석 및 탐지, 내부 정부 유출 분석 및 탐지 등과 같은 다양한 분야로 응용이 확대되고 있다. 본 논문에서는 보안관련 인프라 로그를 분석하고 예측하여 예상 보안사고 시기에 집중적 경계를 통한 선제적 대응을 모색하기 위해 통계적 이론에 기반한 통합 로그 분석 시스템을 개발하기 위해, 회귀분석 및 시계열 분석이 가능한 예측 엔진 시스템을 설계하고 구현한다.

• KIPS Transactions on Software and Data Engineering
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• v.2 no.1
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• pp.7-18
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• 2013

These days, the teaching and learning system has been increasing for the rapid advancement of the information technologies. We can access education systems of good quality anytime, anywhere and we can use the individually personalized teaching and learning system depending on developing the wireless communication technology and the multimedia processing technology. The more the various systems develop, the more software security systems become important. There are a lot kind of fault analysis methods to evaluate software security systems. However, the only assessment method to evaluate software security system is not enough to analysis properly on account of the various types and characteristic of software systems by progressing information technology. Therefore, this paper proposes an integrative method of Fault Tree Analysis (FTA) and Fault Modes and Effect Analysis(FMEA) to evaluate the security of e-teaching and learning system as an illustration.

• Journal of Digital Contents Society
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• v.9 no.3
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• pp.491-498
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• 2008

The leakage of sensitive information by an insider within the organization becomes a serious threat nowadays. Sometimes, these insider threats are more harmful to an organization than external attack. Companies cannot afford to continue ignoring the potential of insider attacks. The purpose of this study is to design an integrated log analysis system that can detect various types of information leakages. The system uses threat rules generated through risk analysis, and monitors every aspect of the online activities of authorized insider. Not only should system have the ability to identify abnormal behavior, they should also be able to predict and even help to prevent potential risk. The system is composed of three modules, which are log collector, log analyzer and report generator.

• The Journal of the Korea institute of electronic communication sciences
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• v.5 no.4
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• pp.425-434
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• 2010

This study shows a limit to attacks that the prevention system, which is used as the mutual third aggressive packet path between open heterogeneous networks and applies prevention techniques according to the trace like IP tracking and attack methods, can prevent. Therefore, the study aims to learn information of constant attack routing protocol and of the path in network, the target of attack and build a database by encapsulating networks information routing protocol operates in order to prevent source attack paths. In addition, the study is conducted to divide network routing protocols developed from the process of dividing the various attack characters and prevent various attacks. This study is meaningful in that it analyzes attack path network and attacks of each routing protocol and secure exact mechanism for prevention by means of 3D-Puzzle, Path, and Cube of the integrated security system which is an implementation method of integrated information protection for access network defense.

• Review of KIISC
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• v.13 no.4
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• pp.37-48
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• 2003

응용 수준에서 정보보호를 위한 침입차단시스템(Firewall)과 침입탐지시스템(IDS)은 조직 내의 컴퓨터 서버 보안 대책으로는 그 한계를 갖고 있다. 이에 따라 보안 운영체제(Secure OS)에 관한 필요성이 점차 사회적으로 공감대를 형성하고 있다. 본 고에서는 보안 리눅스 운영체제의 필요성, 기존 리눅스의 보안성, 보안 리눅스의 개발에 따른 요구사항과 개발 방법을 기술한다. 또한 최근 보안 리눅스 연구 동향으로 미국, 일본, 독일 등의 리눅스 보안 연구동향을 살펴보고, 국내 연구기관과 업체의 제품 출시 현황을 살펴본다. 특히 최근 리눅스 커널 2.5.29부터 표준기능으로 포함되고 있는 커널 보안 모듈 방식인 LSM(Linux Security Module)의 기본 구조를 살펴본다. 현재 국내에서 개발하여 보급되고 있는 보안 리눅스 운영체제는 기존 리눅스 커널에 시스템 호출 후킹을 통한 LKM 방식으로 추가적인 접근제어 외에 해킹 차단, 감사 추적, root의 권한 제한, 통합보안관리 등의 추가적 기능을 제공한다. 향후 Firewall, IDS의 한계를 보완하는 서버 보안 대책으로 활발한 보급이 예상된다.

• Convergence Security Journal
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• v.5 no.2
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• pp.51-56
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• 2005

Service operating management to keep stable and effective environment according as user increase and network environment of the Internet become complex gradually and requirements of offered service and user become various is felt constraint gradually. To solve this problem, invasion confrontation system through proposed this log analysis can be consisted as search of log file that is XML's advantage storing log file by XML form is easy and fast, and can have advantage log files of system analyze unification and manages according to structure anger of data. Also, created log file by Internet Protocol Address sort by do log and by Port number sort do log, invasion type sort log file and comparative analysis created in other invasion feeler system because change sort to various form such as do log by do logarithm, feeler time possible.