• The Journal of Society for e-Business Studies
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• v.7 no.3
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• pp.203-218
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• 2002

According as development of networks and increasing on Internet service, For the performance increase of K4 Firewall require that hardware be installed of 2 CPU or 4 CPU instead of 1 CPU. Output of performance test among 1CPU, 2CPU, and 4CPU of K4 Firewall system has not any efficient about increasing multiple CPUs. K4 Firewall put performance on setting on demon of packet filtering rules and Network Address Translate and Authentication and Proxy services. Performance results that setting after security rules are less 2％ Packet Filtering, 8％-11％ NAT, 18％-20％ Proxy and Authentication services than setting before security rules on K4 Firewall System. NAT and Proxy service have decrease of performance. This performance result comes in useful for research and development on K4 Firewall System.

• The Journal of the Korea institute of electronic communication sciences
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• v.3 no.1
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• pp.8-11
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• 2008

There are multiple reasons that caused the present serious status of network security, including Internet itself having a weak basis. However security is usually discarded when it contends with performance. As the world becomes more tightly interconnected, security technology continues to mature, organizations are feeling a greater need to rediscover network security. Network security technology generally concentrates on protection of the network infrastructure and, by implication, the protection of the user. This is a paper, describe current problems of network security and propose solutions.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.33 no.5
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• pp.847-859
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• 2023

With the recent increase in damage caused by malcious codes using software vulnerabilities in Korea, it is essential to install anti-virus to prevent malicious codes, However, it is not easy for general users to know which anti-virus product has good performance or whether it is suitable for their environment. There are many institutions that provide information on anti-virus performance outside of korea, and these institutions have established their own test environments and test evaluation items, but they do not disclose detailed test environment information, detailed test evaluation items, and results. In addition, existing quality evaluation studies are not suitable for the evaluating the latest anti-virus products because there are many evaluation criteria that do not meet anti-virus product evaluation. Therefore, this paper establishes detailed anti-virus evaluation metrics suitable for the latest anti-virus evaluation and applies them to 9 domestic and foreign anti-virus products to verify the functions and performance of anti-viruses.

• Convergence Security Journal
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• v.11 no.1
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• pp.39-48
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• 2011

QoS(Quality of Service) is defined "The collective effect of service performance which determines the degree of satisfaction of a user of the service" by ITU-T Rec. E.800. The final goal of information system is to secure the performance efficiency within the required time. The security QoS framework is the modeling of the QoS measurement metrics, the measurement time schedule, instrument, method of measurement and the series of methodology about analysis of the result of measurement. This paper relates to implementing issue and performance measuring about blended mechanism between networking technology and security technology. We got more effectiveness in overall network security, when applying and composing amalgamated security mechanism between network technology and security technology. In this paper, we suggest techniques being used on infrastructure system and also offers a security QoS methodology as a model of more effective way. Methodology proposed in this research has proven that it is possible to measure response time through the scheduled method.

• Journal of the Society of Disaster Information
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• v.17 no.3
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• pp.627-639
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• 2021

Purpose: The purpose of this study is to examine the influence of electronic security guard's security performance on the job satisfaction and to make proposals on improvement of employment status and job satisfaction. Method: To accomplish the purpose, this study organized the theoretical background by referring to the preceding researches on the related field. Then, this study conducted a survey on electronic security guards and analyzed the results in statistical methods. Result: According to analysis results, electronic security guard's security performances including academic background, martial art skills, height, weight, and BMI index had a significant influence on factors composing the job satisfaction. Conclusion: To improve the electronic security guard's job satisfaction level, this study suggested measures for improving the wage system and reducing turnover rate. This study also suggested measures for strengthening the physical standards and strengthening the practical training for employment.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.18 no.3
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• pp.109-120
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• 2008

VoIP utilizes the Internet for the services, and therefore it is vulnerable to intrusions and attacks. Because provided services deal with information related to privacy of users, it requires high level security including authentication and the confidentiality/integrity of signaling messages and media streams. However, when such a protocol is implemented in a VoIP phone, the implementation can have limitations due to the limited resources. The present study purposed to implement VoIP security protocols and to evaluate their performance in terms of connection quality and voice quality by applying them to SIP proxy and UA (User Agent). In the result of performance evaluation, the application of the security protocols did not lower voice quality, but connection quality was high in the DTLS based security protocol. As the protocol was applicable to signaling and media paths based on DTLS, we found that it can be a solution for the limited resources of VoIP phone.

• Convergence Security Journal
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• v.23 no.5
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• pp.231-238
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• 2023

The purpose of this paper is to determine the extent to which job satisfaction affects organization commitment and organization performance among industrial security personnel. To this end, we attempted to conduct a four-week survey from August 28 to September 22, 2023, targeting about 150 workers working as industrial security guards in the field. According to the survey, the variables were comprised of "first, job satisfaction, second, organization commitment and third, organization performance" and based on this, three research hypotheses were proposed. After confirming that the internal consistency of each measurement item was satisfied, discriminant validity and conceptual reliability were calculated, and the discriminant validity of each variable was verified. As a result of the analysis, after conducting regression analysis to verify the research model, the results show that among the three research hypotheses, "Job Satisfaction ⇨ Organization Commitment, Job Satisfaction ⇨ Organization Performance" was found to be statistically significant and was adopted. We calculated that "Organization Commitment ⇨ Organization Performance" was not significant and was rejected.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.9
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• pp.4224-4233
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• 2012

As Internet usage is rapidly spreading, tasks that were only possible offline are now available in cyber space but at the same time, new security threats such as hacking and viruses have also increased. For that reason, Comprehensive and methodical information security systems are therefore required in enterprises and organizations. Consequently, the Information Security Management System certification system has been in effect in Korea since July 2001. As of December 2012, 130 enterprises have been certified, and more than 120 ISO27001 certifications have been issued. As such, since the introduction of the ISMS certification system in Korea, the demand for the certification has been steadily increasing, and it is now recognized as an integral part of maintaining the competitiveness in an enterprise. However, the qualitative aspects of certification regarding the effectiveness of ISMS have been continuously questioned by actual customers. In order to clarify the situation and remove such doubts, this study will substantiate the fact that development and certification of ISMS positively affect the business performance of enterprises so that they will recognize the effect of obtaining ISMS certification and eventually prevent security accidents and improve their business performance by developing ISMS.

• Journal of Intelligence and Information Systems
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• v.26 no.3
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• pp.37-50
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• 2020

Information security has become an important issue in the world. Various information and communication technologies, such as the Internet of Things, big data, cloud, and artificial intelligence, are developing, and the need for information security is increasing. Although the necessity of information security is expanding according to the development of information and communication technology, interest in information security investment is insufficient. In general, measuring the effect of information security investment is difficult, so appropriate investment is not being practice, and organizations are decreasing their information security investment. In addition, since the types and specification of information security measures are diverse, it is difficult to compare and evaluate the information security countermeasures objectively, and there is a lack of decision-making methods about information security investment. To develop the organization, policies and decisions related to information security are essential, and measuring the effect of information security investment is necessary. Therefore, this study proposes a method of constructing an investment portfolio for information security measures using game theory and derives an optimal defence probability. Using the two-person game model, the information security manager and the attacker are assumed to be the game players, and the information security countermeasures and information security threats are assumed as the strategy of the players, respectively. A zero-sum game that the sum of the players' payoffs is zero is assumed, and we derive a solution of a mixed strategy game in which a strategy is selected according to probability distribution among strategies. In the real world, there are various types of information security threats exist, so multiple information security measures should be considered to maintain the appropriate information security level of information systems. We assume that the defence ratio of the information security countermeasures is known, and we derive the optimal solution of the mixed strategy game using linear programming. The contributions of this study are as follows. First, we conduct analysis using real performance data of information security measures. Information security managers of organizations can use the methodology suggested in this study to make practical decisions when establishing investment portfolio for information security countermeasures. Second, the investment weight of information security countermeasures is derived. Since we derive the weight of each information security measure, not just whether or not information security measures have been invested, it is easy to construct an information security investment portfolio in a situation where investment decisions need to be made in consideration of a number of information security countermeasures. Finally, it is possible to find the optimal defence probability after constructing an investment portfolio of information security countermeasures. The information security managers of organizations can measure the specific investment effect by drawing out information security countermeasures that fit the organization's information security investment budget. Also, numerical examples are presented and computational results are analyzed. Based on the performance of various information security countermeasures: Firewall, IPS, and Antivirus, data related to information security measures are collected to construct a portfolio of information security countermeasures. The defence ratio of the information security countermeasures is created using a uniform distribution, and a coverage of performance is derived based on the report of each information security countermeasure. According to numerical examples that considered Firewall, IPS, and Antivirus as information security countermeasures, the investment weights of Firewall, IPS, and Antivirus are optimized to 60.74%, 39.26%, and 0%, respectively. The result shows that the defence probability of the organization is maximized to 83.87%. When the methodology and examples of this study are used in practice, information security managers can consider various types of information security measures, and the appropriate investment level of each measure can be reflected in the organization's budget.

• Convergence Security Journal
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• v.12 no.5
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• pp.71-77
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• 2012

Expenses in the form of personnel expenses in the past, in modern times, machine guards to gradually transition has been. This is because the machine guard is more efficient than personnel expenses. But due to false alarms, despite the high expectations of the effects of electronic security in the operation of the electronic security system due to factors that hinder the development of machine guards growth slows. Defect removal aspects of this paper, using IPA (Importance Performance Analysis) techniques to study the operation of electronic security systems and its importance in the development of machine guards, look at how high the technical aspects of electronic security systems composite type of malfunction to minimize crime sensor are presented.