The Problem Of Cloud Technology - 1211 Words

1. Introduction Cloud technology is attracting increasing attention from industry and scientific areas. It has been treated as one of the most important technologies and shown promising future. Cloud is the technology to provide a quick, secure, convenient net computing and data storage service and implemented over the Internet, which is capable of sharing a pool of configurable computing resources with on-demand network access. Cloud technology provides various specific services such as software application, data storage, hardware, and infrastructure. People access Cloud via the internet through web browsers to finish on-demand services, while this was implemented on traditional deploying on-premises servers in old days. Although†¦show more content†¦To achieve the objective above, we need to study how Cloud work internally and externally, what the vulnerabilities and threats are in Cloud, and how to prevent an attack by exploiting the vulnerabilities. Additionally, discussion of specif ic countermeasures for the vulnerabilities and threats is necessary. Fragmentation-redundancy-scattering (FRS), Digital signatures, Homomorphic encryption, and Encryption will be introduced in order to prevent attacks regarding threats and vulnerabilities of Cloud technology. 2. Layers Technically, Cloud is as a term of a platform, it provides, configures and reconfigures servers while the servers could be virtual machines and physical machines. Additionally, Cloud is also as a term of applications that are described as to be accessible over the internet based on the support from powerful servers and large data centers. Therefore, Cloud is quite different from traditional computing paradigms because of its scalable. Cloud is an abstract entity to supply different levels of services. Shown by figure 1, Cloud is typically providing three types of services: Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). Figure 1: A layered model of Cloud Computing (Source: Qi Zhang et al., Cloud computing: state-of-the-art and research challenges, J Internet Serv Appl (2010) pp. 7–18) 2.1 Software as a Service