Application of Network Security in Data Center Based on Private Cloud

At present, the Internet is developing in the direction of "data-centric". Facing the new situation, the traditional Internet with TCP/IP protocol as its core shows many inadaptability, such as security, mobility, congestion control and extensible routing. Traditional security solutions can't meet the security requirements of new data center networks in flexibility, expansibility and mobility due to over-reliance on security equipment and closed service delivery. The focus of network communication has shifted from the campus network to the data center network, and the cloud data center must adopt a new architecture to meet the requirements of mass data transmission. The biggest feature of cloud data centers is flexible resource scheduling and can give full play to the effectiveness of resources. To achieve this goal, network flattening is the basis. Therefore, the private cloud data center network must adopt new structures and technologies to meet the transportation needs of massive network data and maximize the role of data resources. The cloud computing security problem studied in this paper is based on this need. Its core technology is the trust model in cloud computing. Trust model directly affects the stability and security of cloud computing system, and it has great strategic significance for the healthy and sustainable development of cloud computing services.