A Model for Secure Data Sharing Between Different Security Level Networks

Most of the data is processed in information systems every day. This leads to easy transmission, share, process, access and save data. Conventional security precautions such as firewall, IDS/IPS, antivirus, VPN are not enough for data sharing between classified networks and internet. Efficient and effective data sharing is very important in different security level networks. A few special solutions are developed for connecting different security level networks but they cannot be applied to all types of network connections. Each different security level network precautions must be diversified according to security level. In this paper a comprehensive model is developed for connecting different security layer networks which describe technical and managerial security requirements and network topology for every secret level network, data information flow scenarios for organizations and security controls for different security level networks.