• International Journal of Computer Science & Network Security
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• 제22권2호
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• pp.139-144
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• 2022

The smart cities are evolving constantly and are responsible for the current transformation of cities and countries into a completely connected network of information and technology This interconnected network of a huge number of smart devices is capable of exchanging complex information and provides tremendous support including enhanced quality of life within urban locations. Unfortunately this set-up is vulnerable to security attacks and requires the widespread ubiquitous network to authorize access through privacy and thus offer security in order to ensure civilian participation in a country. The smart network should benefit the individuals of the country by developing potential strategies to protect the smart cities and their participating entities from the unauthorized attacks. Trustworthy data sharing strategies based on the utilization of advanced technology features via smart communication network could solve some issues of privacy and security. This paper presents the challenges and issues related to protection and highlights the important aspects of securing the smart cities and its components. It also presents the role of cloud security for building a secure smart city.

• International Journal of Computer Science & Network Security
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• 제23권7호
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• pp.131-140
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• 2023

Network security situational awareness systems helps in better managing the security concerns of a network, by monitoring for any anomalies in the network connections and recommending remedial actions upon detecting an attack. An Intrusion Detection System helps in identifying the security concerns of a network, by monitoring for any anomalies in the network connections. We have proposed a CRF based IDS system using genetic search feature selection algorithm for network security situational awareness to detect any anomalies in the network. The conditional random fields being discriminative models are capable of directly modeling the conditional probabilities rather than joint probabilities there by achieving better classification accuracy. The genetic search feature selection algorithm is capable of identifying the optimal subset among the features based on the best population of features associated with the target class. The proposed system, when trained and tested on the bench mark NSL-KDD dataset exhibited higher accuracy in identifying an attack and also classifying the attack category.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.2178-2181
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• 2003

Active networks allow active node’s functionality to be extended dynamically through the use of active extensions. This flexible architecture facilitates the deployment of new network protocols and services. However, the active nature of a network also raises serious safety and security concerns. These concerns must be addressed before active networks can be deployed. In this paper we look at how we can control active extension’s access to different active nodes. Specifically, the authentication between active nodes is very important in this case. We use unique identity each node has for transferring access policies between active nodes. In this paper, we suggest a new method of transferring access policies performing authentications using identities between active nodes.

• Journal of information and communication convergence engineering
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• 제5권1호
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• pp.64-67
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• 2007

IT industry strategy trend and home network security technology is presented. First, we consider the development strategy to improve next generation IT industry. Second, we have analyzed the technique for implementing home network. Last, we have analyzed the technique to security home network field.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1586-1589
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• 2005

GUMF (Global User Management Framework) that is proposed in this research can be applied to next generation network such as BcN (Broadband convergence Network), it is QoS guaranteed security framework for user that can solve present Internet's security vulnerability. GUMF offers anonymity for user of service and use the user's real-name or ID for management of service and it is technology that can realize secure QoS. GUMF needs management framework, UMS (User Management System), VNC (Virtual Network Controller) etc. UMS consists of root UMS in country dimension and Local UMS in each site dimension. VNC is network security equipment including VPN, QoS and security functions etc., and it achieves the QoSS (Quality of Security Service) and CLS(Communication Level Switching) functions. GUMF can offer safety in bandwidth consumption attacks such as worm propagation and DoS/DDoS, IP spoofing attack, and current most attack such as abusing of private information because it can offer the different QoS guaranteed network according to user's grades. User's grades are divided by 4 levels from Level 0 to Level 3, and user's security service level is decided according to level of the private information. Level 3 users that offer bio-information can receive secure network service that privacy is guaranteed. Therefore, GUMF that is proposed in this research can offer profit model to ISP and NSP, and can be utilized by strategy for secure u-Korea realization.

• 한국정보과학회논문지:정보통신
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• 제30권6호
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• pp.776-786
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• 2003

보안평가 시스템은 다양한 요소로 구성된 대규모 네트워크 도메인 전체의 보안성을 평가하고 이를 바탕으로 보안 관리자 혹은 보안관리 시스템이 네트워크 보안관리를 수행하는데 필요한 의사결정을 지원하는 시스템이다. 이 시스템은 보안상 취약점들로 인한 공격을 방지하기 위해 어떻게 네트워크의 보안 관련 설정을 해주어야 하는지에 관한 의사결정을 지원해 준다. 보안평가 시스템은 네트워크의 “현재 상태”를 분석하고 공격 가능성을 찾아내어 불법적인 침해 행위를 사전에 예방하도록 보안관리의 의사결정을 지원해 준다. 본 논문에서는 다양한 요소로 구성된 대규모 네트워크의 보안성 평가를 자동화하고 침해사고 예방을 위해 보안관리의 의사결정을 도와주는 보안평가 시스템에 대한 요구 사항을 분석하고 이를 반영한 보안평가 시스템을 설계한다.

• 한국IT서비스학회지
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• 제19권5호
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• pp.33-47
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• 2020

In recent years, due to the demand for operating efficiency and cost reduction of industrial facilities, remote access via the Internet is expanding. the control network accelerates from network separation to network connection due to the development of IIoT (Industrial Internet of Things) technology. Transition of control network is a new opportunity, but concerns about cybersecurity are also growing. Therefore, manufacturers must reflect security compliance and standards in consideration of the Internet connection environment, and enterprises must newly recognize the connection area of the control network as a security management target. In this study, the core target of the control system security threat is defined as the network boundary, and issues regarding the security architecture configuration for the boundary and the role & responsibility of the working organization are covered. Enterprises do not integrate the design organization with the operation organization after go-live, and are not consistently reflecting security considerations from design to operation. At this point, the expansion of the control network is a big transition that calls for the establishment of a responsible organization and reinforcement of the role of the network boundary area where there is a concern about lack of management. Thus, through the organization of the facility network and the analysis of the roles between each organization, an static perspective and difference in perception were derived. In addition, standards and guidelines required for reinforcing network boundary security were studied to address essential operational standards that required the Internet connection of the control network. This study will help establish a network boundary management system that should be considered at the enterprise level in the future.

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2004년도 International Conference on Digital Policy & Management
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• pp.173-184
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• 2004

E-Government security is crucial to the development of e-government. Due to the complexity and characteristics of e-government security, the viable current approaches for security focus on preventing the network intrusion or misusing in advanced and seldom concern of the forensics data attaining for the investigation after the network attack or fraud. We discuss the method for resolving the problem of the e-government security from the different side of view - network forensics approaches? from the thinking of the active protection or defense for the e-government security, which can also improve the ability of emergence response and incident investigation for e-government security.

• 한국전자통신학회논문지
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• 제12권5호
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• pp.737-746
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• 2017

2017년 통합보안(IS, Integrated Security), 융합 보안(CS, Convergence Security) 등과 같은 새로운 보안시장의 변화 속에서 운영과 관리 차원의 다양한 보안 패러다임이 제시되고 있다. 이러한 솔루션과 기술은 현존하는 네트워크 인프라의 변경과 유동적인 다차원적인 변화를 이끌어 내기보다는 보안성을 높이는 1차원적인 방어에 모든 보안 역량이 집중되어짐으로써 예상치 못한 침해와 장애를 지속적으로 내제하고 있는 네트워크 인프라를 유지해 오고 있다. 따라서 WB(Water-Bubble)이라는 새로운 아이디어를 네트워크 인프라에 접목하고 실험과 구현 기반의 분석을 진행함으로써 유사패턴 공격과 집중화 트래픽 공격을 방어할 수 있는 탄력적 네트워크 구간을 제안하고 개발할 수 있는 기회이기도 한다. 또한 본 논문에서 제안하는 WB 기반의 강한 보안성을 갖는 탄력적 네트워크 구간에 관한 연구기법은 공격의 최종 목적지로 예상되는 네트워크 영역을 울림형태의 탄력적 영역변화를 갖는 네트워크 구간(구역)으로 유동성과 비예측성, 상호 접점비율에 따른 비 영역 확장성 등의 3대 주요 제한 및 보안 기준을 바탕으로 네트워크 구간 보안성 확보를 위한 연구 자료를 제공하고자 한다.

• 정보보호학회논문지
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• 제19권3호
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• pp.107-117
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• 2009

네트워크 관리자가 침입 탐지 시스템, 방화벽 등의 보안 장비에서 발생하는 경보 메시지를 통하여 네트워크에서 이상 현상이 발생하였는지를 인지하고, 이상 현상이 실제 네트워크 보안 위협인지를 판단하기 위해서는 경보 메시지와 관련된 트래픽을 검색하고 분석하는 등의 일련의 작업이 필요하다. 하지만 보안 장비에서 발생되는 경보 메시지의 양이 많을 뿐만 아니라, 네트워크 관리자가 관련 트래픽을 검색하고 분석하는데 많은 시간이 소요되는 등의 문제점이 있다. 따라서 본 논문에서는 보안 이벤트 시각화 기술을 사용하여 네트워크의 보안 상황을 보다 빠르고 효과적으로 분석 할 수 있는 방법을 제안한다. 제안된 방법의 경우 전체 IP주소 공간에서 트래픽의 흐름을 표현하기 때문에 네트워크 관리자가 현재 네트워크에서 발생되는 보안 위협을 보다 빠르게 판단할 수 있도록 도와준다.