Internal Network Partition Security Model Based Authentication using BlockChain Management Server in Cloud Environment

클라우드 환경에서 블록체인관리서버를 이용한 인증기반 내부망 분리 보안 모델

  • 김영수 (배재대학교 사이버보안학과) ;
  • 이병엽 (배재대학교 사이버보안학과)
  • Received : 2018.04.16
  • Accepted : 2018.05.14
  • Published : 2018.06.28


Recently, the threat to the security and damage of important data leaked by devices of intranet infected by malicious code through the Internet have been increasing. Therefore, the partitioned intranet model that blocks access to the server for business use by implementing authentication of devices connected to the intranet is required. For this, logical net partition with the VDI(Virtual Desktop Infrastructure) method is no information exchange between physical devices connected to the intranet and the virtual device so that it could prevent data leakage and improve security but it is vulnerable to the attack to expose internal data, which has access to the server for business connecting a nonregistered device into the intranet. In order to protect the server for business, we suggest a blockchain based network partition model applying blockchain technology to VDI. It contributes to decrease in threat to expose internal data by improving not only capability to verify forgery of devices, which is the vulnerability of the VDI based logical net partition, but also the integrity of the devices.

오늘날 보안 위협이 점차 증가하고, 인터넷을 통한 외부악성 코드에 감염된 디바이스에 의해서 중요 데이터가 유출되는 피해가 증가하고 있다. 따라서 내부망에 연결된 디바이스에 대한 인증을 통해서 업무용 서버로의 접근을 차단하는 내부망 분리 모델이 필요하다. 이를 위한 VDI (Virtual Desktop Infrastructure)방식을 사용한 논리적 망 분리는 내부망에 연결된 물리 디바이스와 가상 디바이스 간에는 정보 교환이 차단되는 방식으로 중요 데이터의 유출을 방지하고 있으나 미등록 디바이스를 사용하여 내부망의 업무용 서버에 접근하여 중요 자료를 유출하는 공격에는 취약하다. 따라서 이의 해결책으로 VDI(Virtual Desktop Infrastructure) 기술에 블록체인 기술을 수용하여 블록체인 기반 망 분리 모델을 제안한다. 이는 VDIVirtual Desktop Infrastructure) 방식의 논리적 망 분리의 보안 취약점인 디바이스의 위변조에 대한 식별 능력과 디바이스의 무결성 강화를 통한 내부의 중요 데이터의 유출 위협을 감소시키는데 기여한다.


Supported by : 배재대학교


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