• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.326-328
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• 2016

While hackers in early days intended to disable and devastate the system, these days people hack and attack the network in order to steal customer's private information from the big corporate, which changes the nature of the crime to cyber attack for money, eventually causing a lot of damages. One of the most efficient ways to protect this kind of network attack is VPN, referring to Virtual Private Network. VPN is a private networking technology that makes the public network available for only those who are concerned. This paper will suggest the VPN technology that can be applied to Linux server and related protocols and figure the applicable VPN out.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.12
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• pp.2188-2194
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• 2008

Home network is the connection and communication of several electronic and electrical devices at hone with the integration of several technologies like Ethernet, wireless, phone line and power-line at the residential gateway to the internet. This internet based home network can be accessed from any part of the world through any device by any poison via internet. Since home network is developed for comfortable and safe life of home users, the information flow to/from home network needs to be private. Hence the remote access of the home network must be secured. This paper analyses two secure tunneling methods, voluntary and compulsory for L2TP(Layer Two Tunneling Protocol) based VPN(Virtual Private Network) for secure remote access of the home network.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.10a
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• pp.150-153
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• 2001

Today Internet is only Best-Effort service. During the past few years, new types of internet applications which require performance beyond the best-effort service that is provided by the current internet have emerged. These applications required QoS(Quality of Services) guarantee and Security between end-to-end. In this paper simulations Differentiated Services that IETF(Internet Engineering Task Forte) has proposed one of QoS(Quality of Services) guarantee VPN(Virtual private Network) using QoS(Quality of Services) guarantee and IP Security between end-to-end.

• Convergence Security Journal
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• v.3 no.1
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• pp.1-6
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• 2003

Virtual Private Network (VPN) is the technology that can reduce the cost revolutionary and maintain the security like an private line, and the demand is increased more and more. Two kinds of current VPN Protection Profiles(PP) for the national organ are used on development, but it is considered by being several problems. In this paper we consider the VPN's PP problems that has been used currently, and describe to an improvement direction.

• Proceedings of the IEEK Conference
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• 2003.11c
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• pp.125-128
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• 2003

In this paper, we propose a dynamic key lifetime change protocol for performance enhancement of virtual private networks using IPSec. The proposed protocol changes the key lifetime according to the number of secure tunnels. The proposed protocol is implemented with Linux 2.4.18 and FreeS/WAN 1.99. The system employing our proposed protocol performs better than the original version in terms of network performance and security.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2002.11a
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• pp.195-199
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• 2002

Requirements of a well-designed VPNs(Virtual Private Networks) are scalability, performance, reliability, ease of management, interoperability and security. Tunneling is a important technology to support these. This paper researches VPNs tunneling technologies used currently and proposes VPN service models for the scalability that is a problem in VPNs and for the resource limit of Mobile Station in Mobile VPNs environment.

• KIPS Transactions on Computer and Communication Systems
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• v.5 no.5
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• pp.109-116
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• 2016

Today various IoT platforms exist, but most of them only consider IPv6, without other types of network including private network. They support, therefore, the private network to use virtual private network or through the hardware gateway. To solve this limitation, we propose a IoT platform that provides IoT Services on private networks. Also we verify this platform though constructing a testbed.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.250-253
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• 2017

최근 급증하는 보안 침해 사고와 함께 보다 다양해지고 있는 해킹 기법들에 대한 대응책 마련이 논의되고 있다. 기업의 내부 인프라 자산 보호를 위해 조치를 취할 수 있는 기본적인 1차 대응책으로 네트워크 계층에서의 방어에 대한 중요성이 대두되고 있다. 본 논문에서는 일반 공중망(Public Network)과 분리된 가상의 사설망(VPN: Virtual Private Network)을 구현함으로써 기존의 VPN 모델보다 보안성이 뛰어나며 저렴한 비용으로 외부에서의 접근 및 스누핑(Snooping) 공격과 같은 보안위협에 대비할 수 있는 VPN 모델을 구축하여 실제 현업 망에서의 적용 가능성을 도출하고자 한다.

• Proceedings of the IEEK Conference
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• 2007.07a
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• pp.11-12
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• 2007

OVPN(Optical Virtual Private Network) based on DWDM(Dense Wavelength Division Multiplexing) backbone framework is considered as a promising approach for the future VPN. This paper proposes a new routing algorithm, called PMIPMR (Priority-based Minium Interference Path Multicast Routing) algorithm which finds an alternate route considering node priorities when the congestion is occurred in a network. The PMIPMR algorithm tries to improve blocking probability and wavelength utilization by avoiding congested path for potential future connection requests.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.649-651
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• 2014

The Digital Living Network Alliance (DLNA) standard enables easy sharing of multimedia contents in the home network environment. However, with the proliferation of mobile computing devices such as smartphones and tablets, the need for media sharing to expand beyond the boundaries of the home network arose. In this paper, a method for accessing DLNA based home network from the mobile environment is proposed. The proposed method uses mobile Virtual Private Network (VPN), and enables easy access to the resources in the home network from the wireless mobile environment.