• Journal of Advanced Navigation Technology
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• v.19 no.6
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• pp.587-594
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• 2015

Open operating system, Linux is the traditional Web, E-mail, DNS, FTP server, as well as being used in Cloud and Big data infrastructure. In addition, Linux is also used like a desktop or mobile devices, smart TV and cars. In particular, stepping up to the IoT era at this time is expected to be greater proportion occupied by Linux. As the use of Linux has increased security has emerged as an important factor. User management is core of Linux system security. In this paper, Classifying Linux user and analyzed the role of the user-specific file. Finally, we analyzed the linux management technologies and useful user security tools.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.241-244
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• 2003

Recently, IETF Mobile IP WG focus on security problem issues in Mobile IPv6 and provide appropriate protocol to solve them. These include the protections of Binding Updates both to home agents and correspondent nodes, prefix discovery messages and transporting data packets. In Mobile IPv6, control traffics between home agents and mobile nodes uses IPsec to avoid that mobile nodes and correspondent nodes may be vulnerable to attacks. It is used, however, Return Routability procedure for correspondent node to assure that the right mobile node is sending the messages. In this paper, we propose method of IPser processing to protect messages between home agents and mobile nodes.

• The KIPS Transactions:PartC
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• v.8C no.5
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• pp.557-564
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• 2001

Many people use Linux and FreeBSD because it is freeware and excellent performance. The open source code is very important feature but it also has some problem which may be attacked by hackers frequently. This paper describes the SecuROS of secure operating system that is best solution to this problem and introduces user and programmer interface for active use of secure operating system. Developed secure operating system is composed of the access control method MAC and ACL and conforms to the POSIX which is universally used.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.4
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• pp.1449-1457
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• 2010

The intrusion prevention system solution is receiving the spotlight as the next generation security system. It is anticipated that the system will form a very active security market both domestically and overseas. Moreover, quality evaluation proving successful inspection of merchandises is required of domestic businesses seeking to operate in the international market, and general users also prefer those that have successfully passed inspection. This study has constructed a security quality evaluation model for intrusion prevention system by deriving and analyzing security quality evaluation items required by an intrusion prevention system solution and by classifying them in detail. The derived quality evaluation model will play an important role of assessing and improving the quality of intrusion prevention system.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06d
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• pp.77-80
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• 2008

IP 네트워크(공중망)에 새로운 네트워크 기술들의 결합, 예를 들면 IP-USN, IP-Mesh, IP-PLC 등의 이종 네트워크가 생겨나면서 이러한 네트워크를 안전하게 관리하기 위한 보안 기술의 개발이 요구되고 있다. 기존 IP 네트워크가 가지는 다양하고 견고한 보안 기술들이 이종 네트워크에 그대로 사용될 수 없으면서 생겨나는 문제 중 PKI 기반 인프라를 적용할 수 없다는 것이 가장 현실적이고 중요한 문제로 여겨지고 있다. 이러한 문제로 인해, 새로운 네트워크 기술들은 주로 내부에서 사용하는 대칭키 방식의 암호화, 복호화만을 정의하고 있다. 공개키 방식을 사용할 수 없는 가장 큰 이유는 인증기관에서 발급되는 인증서 중심의 인프라를 사용할 수 없기 때문이다. 본 논문에서는 이러한 문제를 해결하기 위해서, 이종 네트워크 환경에서 비인증서 기반의 공개키를 활용하는 보안키 관리 메커니즘을 제안한다. 제안하는 방식은 신원기반 공개키 개념을 도입하여 적용하였으며, 디바이스간 인증을 위한 인증 티켓 방식 및 보안키의 유효범위를 정하고 이를 활용하여 보다 안전한 네트워크 환경을 구축할 수 있는 방안들을 제시하였다.

• Proceedings of the Korea Information Assurance Society Conference
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• 2004.05a
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• pp.243-249
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• 2004

According as information society has been raised, many countries of the world have taken a lot of interests in e-government implementation. The several guidance countries already have offered people various administrative service and popular enmity service in the Internet conveniently, People can use e-government service more conveniently by the Internet, but important personal information or state secret can be leaked in the Internet. Because of these security vulnerabilities, a lot of countries are constructing security infrastructure that can protect personal information. In this paper, we examine e-government construction trends of the several guidance countries, and propose security considerations to provide safe and reliable e-government service.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.6
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• pp.1231-1238
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• 2013

In the background of rapidly increasing domestic cloud service demand, worries about security and privacy incidents can hinder the promotion of cloud service industry. Thus, it is crucial that the independent 3rd party assures the reliability for using the cloud service. This paper compares several external and internal cloud service certification cases, for example CSA certification, FedRAMP certification, KCSA certification, and concludes that insufficient security and privacy controls are prevailing. As a consequence, several enhanced countermeasures by using ISO/IEC 27017, KISA's ISMS considering manageability and expertise are proposed in the cloud service certification system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.161-164
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• 2012

Location-Based Services(LBS) are a general class of computer program-level services used to include specific controls for location data as control features in computer programs. In recent years, the number of smart device(Smart Phone, Tablet PC etc.) users growth was exponential. For that reason, using rate of LBS has drastically increased. The most important thing of LBS is security. Personal information, especially private information likes illness, should not be disclosed. In this paper shows how to attack LBS and how to defense it.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.3
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• pp.612-618
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• 2013

The file security function, which this paper suggests, restricts the access of an unauthorized users by using password algorithm and saving file. Saved files that are encrypted are read by decrypting them with decryption algorithm. These features are user interface to design the program for user friendly. The security function implements both file encryption and decryption programs and tests whether the experiment works or not. In addition, when a decryption is progressed and the settings of between decryption and encryption are different each other, the security function also checks the possibility of decryption. We can enhance the security on important files stored in Windows servers or personal computers by developing this program.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.5
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• pp.420-427
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• 2013

Recently, for secure software development, static analysis tools have been used mostly to analyze the source code of the software and identify software weaknesses caused of vulnerabilities. In order to select the optimal static analysis tool, both weaknesses rules and analysis capabilities of the tool are important factors. Therefore, in this paper we propose the test codes developed for evaluating the rules and analysis capabilities of the tools. The test codes to involve 43 weaknesses such as SQL injection etc. can be used to evaluate the adequacy of the rules and analysis capabilities of the tools.