• Proceedings of the KIEE Conference
• /
• 2004.11c
• /
• pp.126-128
• /
• 2004

This paper proposes design and implementation for IKE system that is available to IP security communication on IPv6 network. IPsec is a standard for security on network or processing layer of network communication. IPsec consists of step to negotiate security policy and step to negotiate and provide security key material for peer-to-peer security. We use the ISAKMP for negotiating security policy. And we use the IKE for negotiating and providing the key material. The system is based on VxWorks and is tested with Racoon that is a IKE daemon on FreeBSD. In this paper, we propose an implementation method for mobile host providing network communication with IP security.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.04a
• /
• pp.793-795
• /
• 2001

IPSec은 IETF에 의해 IP 레이어 보안을 위한 개방형 구조로 설계된 것으로 인터넷에서의 정보보호를 대표한다. 그리고 ISKMP는 인터넷에서 요구되는 정보보호를 설정하기 위한 인증, 키 관리 및 보안협상등을 담당하는 프로토콜로써 IPSec으로 보다 체계화된 인터넷 정보보호를 제공하기 위해 포함되어야 하는 IKE에서 사용하는 프로토콜이다. 이러한 IPSec을 이용한 보안 시스템을 개발하기 위해서는 시스템에서 사용하고 있는 프로토콜들에 대한 평가 방법도 같이 제시되어야 하나, 기존의 프로토콜 분석 도구들은 IPSec에서 제공하고 있는 프로토콜들을 분석하지 못할 뿐만 아니라 개발단계에서의 구현 평가를 하지 못한다. 본 논문에서는 IPSec을 구현하는데 필요한 AH 및 ESP 프로토콜과 ISAKMP 프로토콜을 실시간으로 분석하고, 이들 프로토콜들이 얼마나 잘 구현되었는지를 평가할 수 있는 프로토콜 분석 도구를 설계하고 구현하였다.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.28 no.6C
• /
• pp.659-667
• /
• 2003

IPsec refers to a standardized set of security protocols and algorithms which can provide the integrity, the authentication and the confidentiality services for IP packets in the Internet. Between two security gateways, IPsec provides the access control, the connectionless Integrity, data origin authentication, the anti-replay, and the confidentiality services, not only to the IP layer but also to the upper layers. In this paper, we describe a VPN (Virtual Private Network) testbed configuration using the FreeS/WAN and analyze the ISAKMP messages exchanged between the linux security gateway during the IKE SA setup. Also, we describe our development of an IPSEC encryption verification tool which can be used conveniently by VPN administrators.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• v.9 no.2
• /
• pp.811-815
• /
• 2005

IPSec(Internet Protocol Security) is a framework for a set of protocols for security at the network or packet processing layer of network communication. IPSec is providing authentication, integrity and confidentiality security services. The specifications for Internet Key Exchange(IKEv1) were released to the world. Some criticisms of IKEv1 were that it was too complex and endeavored to define too much functionality in one place. Multiple options for multiple scenarios were built into the specification. The problem is that some of the included scenarios are rarely if ever encountered. For IPsec to work, the sending and receiving devices must chare a Public Key. This is accomplished through a protocol known as Internet Security Association and Key Management Protocol/Oakley(ISAKMP/Oakley), which allows the receiver to obtain a public key and authenticate the sender using digital certificates. This thesis is a study on the performance improvement of the security transmission using the SSFNet(Scalable Simulation Framework Network Models)

• Review of KIISC
• /
• v.16 no.3
• /
• pp.55-62
• /
• 2006

인터넷을 이용한 생활 패턴의 변화와 정보의 공유가 점차 이동 망과 무선망을 통해 확장되어, 이제는 유 무선의 경계가 없는 통신환경에서 살게 되었다. 이와 같은 접속환경의 변화와 확장은 더욱 네트워크 계층에서의 보안을 필요하게 만들었고, 이를 제공하는 IPSec은 네트워크 계층에서 IP 데이터 그램에 대한 인증, 무결성, 기밀성을 제공해 주는 표준 프로토콜로써 AH(Authentication Header), ESP(Encapsulation Security Payload), IKE(Internet Key Exchange)로 구성되며, 향후 통신의 발달과 함께 연구의 중요성이 부각되고 있다. 이 중에서 IKE는 IPSec에서 사용하는 보안연계(SA)를 자동으로 설정하는 기능을 가지고 있으며, 상호 인증 및 키 교환을 하는 하이브리드 프로토콜이다. IKEv1은 ISAKMP, DOI, SKEME등으로 구성되어 있다. 그러나 IKEv1은 상호호환성이 부족하기 때문에 구현이 용이하지 않으며, 서비스 거부 공격에 취약한 구조로 되어있다. IKEv2는 이러한 단점을 보안하기 위해 출현하였다. 본 논문에서는 IKEv2 설계시 요구사항에 대하여 알아보고, 그 설계를 기반으로 구현하였다.

• The KIPS Transactions:PartC
• /
• v.9C no.3
• /
• pp.367-374
• /
• 2002

IPsec offers not odd Internet security service such as Internet secure communication and authentication but also the safe key exchange and anti-replay attack mechanism. Recently IPsec is implemented on the various operating systems. But there is no existing tool that checks the servers, which provide IPsec services, work properly and provide their network security services well. In this paper, we design and implement the rule based security evaluation system for IPsec engine. This system operated on Windows and UNX platform. We developed the system using Java and C language.

• Journal of Korea Society of Industrial Information Systems
• /
• v.10 no.2
• /
• pp.67-75
• /
• 2005

In this paper, we design and implement real time IP security packet analyzer on IPv4 and IPv6 network. This packet analyzer sniffs and analyzes the packets generated by the protocols that are used by IPsec, IKE, IPv4 and IPv6 such as AH, ESP, ISAKMP, IP, ICMP and so on. The purpose of this analyzer is to check current security status of the network automatically. In this paper we provide implementation details and the examples of security evaluation by using our security packet analyzer system.

• The KIPS Transactions:PartC
• /
• v.12C no.1 s.97
• /
• pp.1-10
• /
• 2005

Electronic Data Interchange(EDI) between a number of companies goes on increasing on the internet. Although a conventional EDI system reduces business process efforts, time, resources, etc., important information is easily and frequently exposed by well trained hackers and crackers, which inflict a severe loss on the company and even put the company under a crisis. This study integrates the conventional EDI system and Virtual Private Tet(VPN) to maximize an overall efficiency of speed and security in data transferring by the level of importance. The EDI system interfaced to IPSec and L2TP of VPN allows us to select two modes : the one focuses on a high speed with a low or a medium level security or the other does on a high level security with a low or a medium level speed. Both the company and the end users get a lot of tangible and intangible advantages by integrating the EDI system and VPN.