• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.696-699
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• 2009

A VPN is a private network that uses a public network to connect remote sites or users together. As its popularity grows, companies, organization and even the government turned to it as a means of extending their own networks. To setup a Virtual Private a proper IP VPN Architecture must first be selected. In this paper, the types of IP Virtual Private Network Architecture like the MPLS-Based, IPSec-Based and the SSL/TLS-Based are discussed and compared. The comparison may serve as a guide for selecting the proper IP Virtual Private Network Architecture that is suitable for the company's needs.

• Management Science and Financial Engineering
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• v.12 no.2
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• pp.37-62
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• 2006

This paper considers the problem of designing logical tunnels in virtual private networks considering QoS guarantee which restricts the number of tunnel hops for each traffic routing. The previous researches focused on the design of logical tunnel itself and Steiner-tree based solution algorithms were proposed. However, we show that for some objective settings it is not sufficient and is necessary to consider both physical and logical connectivity at the same time. Thereupon, the concept of the layered network is applied to the logical tunnel design problem in virtual private networks. The layered network approach considers the design of logical tunnel as well as its physical routing and we propose a modified branch-and-price algorithm which is known to solve layered network design problems effectively. To show the performance of the proposed algorithm, computational experiments have been done and the results show that the proposed algorithm solves the given problem efficiently and effectively.

• Journal of Digital Convergence
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• v.13 no.5
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• pp.169-176
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• 2015

Virtual Private Network is a method which can use as a private network using private line. The quality of security of virtual private network is influenced by security auditability, cryptographic support, user data protection, access control, etc., and efficiency is influenced by throughput, latency, the number of cession, etc. In this paper, we constructed a evaluation model based on CC(ISO/IEC 15408) and the quality evaluation standard ISO/IEC 25000 series to evaluate the quality level about efficiency with security performance of virtual private network. We think that this study will contribute to construct the system which can evaluate the quality of virtual private network based on CC and ISO quality evaluation standard.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.11-11
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• 2004

• Convergence Security Journal
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• v.8 no.4
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• pp.51-56
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• 2008

A combination of VPNs and dial-up access, such as DSL and Cable, usually provides the cost-effective solution as the substitution of private networks on high-cost leased line. The business demand for high availability has increased with VPN spreading. This paper presents the schemes for a high availability of network access and a load balancing of network traffic in VPN gateways by using multiple links or multihoming capability based on active-active approach. The high availability and load balancing of network links can be achieved by duplicating external network access into multiple independent links. This can provide a continuous network connection to internal users even if one of the links is failed. Moreover, it can provide twice network bandwidth by distributing the traffic into the links. Static and dynamic algorithms are proposed as the load balancing algorithms.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.725-728
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• 2003

This paper describes an architecture how QoS-enabled virtual private network networks over the internet can be built and managed. The basic technologies for secure VPNs and for QoS support the introduced. Vision of a QoS-enabled VPN service over internet is described. We also presented the simplified implementation scenario and some implementation details in order to achieve secure and QoS-enable VPNs.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2002.11a
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• pp.27-30
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• 2002

본 논문에서는 이동 단말기를 이용해 외부 네트워크에서 홈 네트워크로 안전하게 접근을 하기 위한 방법을 제시한다. PDA(Personal Digital Assistants)와 같은 이동 단말기가 발달함에 따라 외부 네트워크에서 흠 네트워크에 접속하여 가전 장비들을 제어하는 연구가 매우 중요하다. 그러나 방화벽만으로 홈 네트워크의 장비에 안전하게 접속하여 제어하기에는 많은 문제점을 지니고 있다. 본 논문에서는 외부네트워크에서 흠 네트워크로의 안전한 접근을 위해서 가상 사설망(Virtual Private Network)을 홈 네트워크에 적용하는 방법을 제시한다.

• The Journal of the Korea Contents Association
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• v.9 no.8
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• pp.41-48
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• 2009

As enactment and enforcement of capital markets integration law, investment banks are going to be appeared in our financial market and be able to provide payment services. To provide these kinds of services, investment banks need to be participated in the financial network. As the financial network enormously affect the economy, the operation of the network will require a variety of risk managements. In this paper we define operational risk management criteria for the financial network such as security, in-time response, economical efficiency and stability to be required for the healthy economy and propose the configuration of the financial network system based on virtual private networks for investment banks to provide payment services. Finally we analyze that the proposed VPN configuration for financial networks has high security and in-time response with the cost and operation effective.

• Electronics and Telecommunications Trends
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• v.14 no.6 s.60
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• pp.74-86
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• 1999

VPN (Virtual Private Network) is an effort to get some of the advantages of public network – cost saving, scalability, flexibility, and efficient network management as well as some advantages of private dedicated network – fast speed and less security threats. We introduce protocols to implement VPN, pros and cons of VPN, and its application areas. We also explain some tasks and classification criteria that should be considered in deploying VPN, available commercial products and recent industrial trends of VPN.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.823-826
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• 2011

VPN을 구성하기 위해서는 각각의 단말기(PC)에 VPN장치를 장착하거나, 공중망으로 연결하는 라우터에 VPN장치를 장착해야만 한다. 본 논문은 VPN 장비 없이, NDIS Driver를 개발하여 장비 없이 언제 어디서든 VPN을 구성하여, 보안성과 이동성, 효율성을 높여 해킹으로부터 안전한 네트워크를 구축하는 것이 목표이다.