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2014 IEEE 6th International Conference on Cloud Computing Technology and Science最新文献

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A Wavelet Entropy-Based Change Point Detection on Network Traffic: A Case Study of Heartbleed Vulnerability 基于小波熵的网络流量变化点检测——以“心脏出血”漏洞为例
Pub Date : 2014-12-15 DOI: 10.1109/CLOUDCOM.2014.78
Chonho Lee, Liu Yi, Li Tan, Weihan Goh, Bu-Sung Lee, C. Yeo
This paper investigates network traffic before and after a vulnerability called Heart bleed becomes a public issue around March to May, 2014. To detect anomalies and potential threats due to the vulnerability, a wavelet entropy-based change-point detection method is proposed and compared with three other methods: prediction-based, clustering-based and Fourier transform-based. We show that the proposed wavelet entropy-based method outperforms the others in terms of ease of parameter setting, false alarm and detection accuracy. Using the proposed method and a visualization tool, we have studied Heart bleed vulnerability and successfully captured changes in packet volume and flow.
本文研究了2014年3月至5月左右,一个名为“心脏出血”的漏洞成为公共问题前后的网络流量。为了检测漏洞引起的异常和潜在威胁,提出了一种基于小波熵的变化点检测方法,并与基于预测、基于聚类和基于傅立叶变换的三种方法进行了比较。结果表明,基于小波熵的方法在参数设置、虚警和检测精度方面优于其他方法。利用提出的方法和可视化工具,我们研究了心脏出血漏洞,并成功捕获了数据包数量和流量的变化。
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引用次数: 8
Factors Influencing an Organisation's Intention to Adopt Cloud Computing in Saudi Arabia 影响组织在沙特阿拉伯采用云计算意图的因素
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.95
Nouf Alkhater, G. Wills, R. Walters
Cloud computing is paradigm that has emerged to deliver IT services to consumers as a utility service over the Internet. In developing countries, particularly Saudi Arabia, cloud computing is still not widely adopted. As a result, this study seeks to investigate the most influential factors that can encourage an organisation to use the cloud or which might impede them from moving to it. This research proposes an integrated model that incorporates aspects of the Technology-Organisation-Environment (TOE) framework and integrates the critical factors from existing theories along with other factors to examine the impact of this variable on the adoption decision of enterprises. Future work will be focused on confirming the proposed model.
云计算是一种范例,它通过互联网将IT服务作为实用服务交付给消费者。在发展中国家,特别是沙特阿拉伯,云计算仍然没有被广泛采用。因此,本研究旨在调查最具影响力的因素,这些因素可以鼓励组织使用云计算或可能阻碍他们迁移到云计算。本研究提出了一个集成模型,该模型结合了技术-组织-环境(TOE)框架的各个方面,并整合了现有理论中的关键因素以及其他因素,以检验该变量对企业采用决策的影响。未来的工作将集中于确认所提出的模型。
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引用次数: 91
Simplified Resource Provisioning for Workflows in IaaS Clouds 简化IaaS云中工作流的资源发放
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.129
Amelie Chi Zhou, Bingsheng He
Resource provisioning is an important and complicated problem for scientific workflows in Infrastructure-as-a-service (IaaS) clouds. Scientists are facing the complexities resulting from the diverse cloud offerings, complex workflow structures and characteristics as well as various user requirements on budget and performance. In this paper, we review the related work on the cost-aware optimizations of workflows in IaaS clouds and summarize the underlying research issues. Existing studies are not effective enough on finding good solutions to workflow optimization problems due to the complexity of workflows and the cloud dynamics. The heuristics proposed in the existing work are specifically designed for certain applications or certain budget and performance requirements. To address those issues, we propose a flexible and effective optimization system to simplify the resource provisioning for scientific workflows in IaaS clouds. The system adopts a probabilistic QoS notion to obtain good optimization results in the dynamic cloud environment and a cloud- and workflow-specific declarative language to specify various workflow optimization problems. We summarize our ongoing work and present some preliminary results on real-world scientific workflows. The experimental results demonstrate the effectiveness of our system on monetary cost optimizations and its capability to solve a wide class of optimization problems for scientific workflows.
资源供应是基础设施即服务(IaaS)云中科学工作流的一个重要而复杂的问题。科学家们正面临着各种各样的云产品、复杂的工作流程结构和特征以及各种用户对预算和性能的要求所带来的复杂性。在本文中,我们回顾了IaaS云中成本感知工作流优化的相关工作,并总结了潜在的研究问题。由于工作流的复杂性和云动力学,现有的研究在寻找工作流优化问题的好的解决方案方面不够有效。现有工作中提出的启发式方法是专门为某些应用程序或某些预算和性能要求设计的。为了解决这些问题,我们提出了一个灵活有效的优化系统,以简化IaaS云中科学工作流的资源配置。系统采用概率QoS的概念在动态云环境下获得良好的优化效果,并采用针对云和工作流的声明性语言来指定各种工作流优化问题。我们总结了我们正在进行的工作,并在现实世界的科学工作流程中提出了一些初步结果。实验结果证明了我们的系统在货币成本优化方面的有效性,以及它解决科学工作流程中广泛的优化问题的能力。
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引用次数: 7
A Keystone-Based Virtual Organization Management System 基于keystone的虚拟组织管理系统
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.31
Craig A. Lee, N. Desai, Andrew Brethorst
As distributed, on-line communities are increasingly supported by the global, interconnected computing infrastructure, methods must be developed to securely manage their interactions. The virtual organization (VO) concept provides a security and discovery context whereby collaboration across multiple administrative domains can be enabled while enforcing joint security policies. In the era of cloud computing, VOs can be used to manage "community clouds", i.e., Cloud federations. In this paper, we describe a method for re-purposing the Open Stack Keystone service to act as a VO Management System (VOMS) called Key VOMS. With minor changes, it can be used to manage access to services that are registered for use by members of any given VO. These services can be arbitrary infrastructure-level or application-level services. This is illustrated by using Key VOMS to manage access to a set of RSS feed topics. While very flexible, the use of an external, third-party, such as Key VOMS, raises fundamental semantic interoperability and trust delegation issues that must be addressed in future work.
由于分布式的在线社区日益受到全球互联计算基础设施的支持,因此必须开发出安全管理其交互的方法。虚拟组织(VO)概念提供了一个安全和发现上下文,在执行联合安全策略时,可以通过该上下文启用跨多个管理域的协作。在云计算时代,VOs可以用来管理“社区云”,即云联盟。在本文中,我们描述了一种重新利用开放堆栈Keystone服务作为VO管理系统(VOMS)的方法,称为密钥VOMS。只要稍加修改,就可以使用它来管理对注册供任何给定VO成员使用的服务的访问。这些服务可以是任意的基础设施级或应用程序级服务。通过使用Key VOMS来管理对一组RSS提要主题的访问,可以说明这一点。虽然非常灵活,但使用外部第三方(如Key VOMS)会产生基本的语义互操作性和信任委托问题,这些问题必须在未来的工作中解决。
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引用次数: 11
A Multi-resource Selection Scheme for Virtual Machine Consolidation in Cloud Data Centers 云数据中心虚拟机整合的多资源选择方案
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.130
N. Hieu, M. D. Francesco, Antti Ylä-Jääski
Resources used in a cloud data center could be spread across a large number of servers that are not fully utilized. This situation results in significant operational costs which are directly related to the power consumption of active servers. Virtual machine migration enables reducing the number of active servers by consolidating the load on a limited amount of nodes. Several schemes have actually been proposed to consolidate virtual machines on the minimum number of physical servers in order to reduce power consumption. However, most of the existing solutions only consider a limited trade off among multiple types of resources, thus resulting in unnecessarily activated physical servers. This article proposes a multi-resource selection (MRS) scheme for consolidating virtual machines in cloud data centers. With MRS, each physical server is first characterized in terms of multiple types of resources and then classified through its overall resource utilization. Based on the MRS scheme, a balanced multiple-resource utilization algorithm is also used to spread the load across different types of resources while consolidating virtual machines. The proposed solution is evaluated through simulations on both synthetic and real-world workloads. Experimental results show that the proposed approach outperforms several existing schemes in terms of the number of active physical servers and the utilization of multiple resources.
云数据中心中使用的资源可能分散在大量未得到充分利用的服务器上。这种情况导致显著的操作成本,这与活动服务器的功耗直接相关。虚拟机迁移可以通过在有限数量的节点上整合负载来减少活动服务器的数量。实际上已经提出了几种方案,将虚拟机整合到最少数量的物理服务器上,以降低功耗。然而,大多数现有的解决方案只考虑在多种类型的资源之间进行有限的权衡,从而导致不必要地激活物理服务器。本文提出了一种用于云数据中心虚拟机整合的多资源选择方案。使用MRS,首先根据多种类型的资源来描述每个物理服务器,然后根据其总体资源利用率进行分类。在MRS方案的基础上,采用均衡的多资源利用算法,在整合虚拟机的同时将负载分散到不同类型的资源上。通过在合成工作负载和实际工作负载上的模拟来评估所提出的解决方案。实验结果表明,该方法在活动物理服务器数量和多资源利用率方面优于现有的几种方法。
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引用次数: 8
Exploring the Performance Impact of Virtualization on an HPC Cloud 探索虚拟化对高性能计算云的性能影响
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.71
Nuttapong Chakthranont, Phonlawat Khunphet, Ryousei Takano, Tsutomu Ikegami
The feasibility of the cloud computing paradigm is examined from the High Performance Computing (HPC) viewpoint. The impact of virtualization is evaluated on our latest private cloud, the AIST Super Green Cloud, which provides elastic virtual clusters interconnected by Infini Band. Performance is measured by using typical HPC benchmark programs, both on physical and virtual cluster computing clusters. The results of the micro benchmarks indicate that the virtual clusters suffer from the scalability issue on almost all MPI collective functions. The relative performance gradually becomes worse as the number of nodes increases. On the other hand, the benchmarks based on actual applications, including LINPACK, OpenMX, and Graph 500, show that the virtualization overhead is about 5% even when the number of nodes increase to 128. This observation leads to our optimistic conclusions on the feasibility of the HPC Cloud.
从高性能计算(HPC)的角度考察了云计算范式的可行性。虚拟化的影响是在我们最新的私有云上进行评估的,AIST超级绿色云,它提供了通过Infini Band互联的弹性虚拟集群。性能是通过在物理和虚拟集群计算集群上使用典型的HPC基准程序来测量的。微基准测试结果表明,虚拟集群在几乎所有MPI集合功能上都存在可伸缩性问题。随着节点数量的增加,相对性能逐渐变差。另一方面,基于实际应用程序(包括LINPACK、OpenMX和Graph 500)的基准测试表明,即使节点数量增加到128个,虚拟化开销也只有5%左右。这一观察结果使我们对高性能计算云的可行性得出了乐观的结论。
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引用次数: 10
Cloud Platform for Scientific Advances in Earth Surface Interferometric SAR Image Analysis 地表干涉SAR图像分析科学进展的云平台
Pub Date : 2014-12-15 DOI: 10.1109/CLOUDCOM.2014.96
L. Mossucca, I. Zinno, S. Elefante, C. Luca, V. Casola, O. Terzo, F. Casu, R. Lanari
The advanced Differential SAR Interferometers (DInSAR) methodologies are widely used for the investigation of Earth's surface deformation phenomena. In particular, the advanced DInSAR approach referred to as Small Baseline Subset (SBAS) technique is able to produce deformation velocity maps and the corresponding displacement time-series from a temporal sequence of space borne SAR acquisitions. Considering the already huge SAR data archives as well the upcoming massive data flow coming from the SENTINEL satellite constellation, cloud computing can be a valid solution to carry out DInSAR analyses thanks to its scalability and flexibility features. In this paper, the focus is given on the migration of the whole parallel version of the SBAS technique, namely P-SBAS, to a cloud environment by taking into account different parameters that influence processing time. Experimental tests that have been performed using both private and public cloud are also presented.
先进的差分SAR干涉仪(DInSAR)方法被广泛用于地球表面变形现象的研究。特别是,被称为小基线子集(SBAS)技术的先进DInSAR方法能够从星载SAR获取的时间序列中生成变形速度图和相应的位移时间序列。考虑到已经庞大的SAR数据档案以及即将到来的来自SENTINEL卫星星座的海量数据流,云计算由于其可扩展性和灵活性的特点,可以成为进行DInSAR分析的有效解决方案。在本文中,重点是考虑到影响处理时间的不同参数,将SBAS技术的整个并行版本(即P-SBAS)迁移到云环境。还介绍了使用私有云和公共云进行的实验测试。
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引用次数: 1
SRL: A Scalability Rule Language for Multi-cloud Environments SRL:用于多云环境的可伸缩性规则语言
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.170
K. Kritikos, Jörg Domaschka, A. Rossini
The benefits of cloud computing have led to a proliferation of infrastructures and platforms covering the provisioning and deployment requirements of many cloud-based applications. However, the requirements of an application may change during its life cycle. Therefore, its provisioning and deployment should be adapted so that the application can deliver its target quality of service throughout its entire life cycle. Existing solutions typically support only simple adaptation scenarios, whereby scalability rules map conditions on fixed metrics to a single scaling action targeting a single cloud environment (e.g., Scale out an application component). However, these solutions fail to support complex adaptation scenarios, whereby scalability rules could map conditions on custom metrics to multiple scaling actions targeting multi-cloud environments. In this paper, we propose the Scalability Rule Language (SRL), a language for specifying scalability rules that support such complex adaptation scenarios of multi-cloud applications. SRL provides Eclipse-based tool support, thus allowing modellers not only to specify scalability rules but also to syntactically and semantically validate them. Moreover, SRL is well integrated with the Cloud Modelling Language (Cloud ML), thus allowing modellers to associate their scalability rules with the components and virtual machines of provisioning and deployment models.
云计算的好处导致了基础设施和平台的激增,这些基础设施和平台涵盖了许多基于云的应用程序的供应和部署需求。然而,应用程序的需求可能在其生命周期中发生变化。因此,应该调整其供应和部署,以便应用程序能够在整个生命周期中交付其目标服务质量。现有的解决方案通常只支持简单的适应场景,即可伸缩性规则将固定指标的条件映射到针对单个云环境的单个扩展操作(例如,向外扩展应用程序组件)。然而,这些解决方案无法支持复杂的适应场景,在这些场景中,可伸缩性规则可以将自定义指标的条件映射到针对多云环境的多个扩展操作。在本文中,我们提出了可伸缩性规则语言(SRL),这是一种用于指定支持多云应用程序复杂适应场景的可伸缩性规则的语言。SRL提供了基于eclipse的工具支持,因此,建模人员不仅可以指定可伸缩性规则,还可以在语法和语义上验证这些规则。此外,SRL与云建模语言(Cloud modeling Language, Cloud ML)集成得很好,从而允许建模者将其可伸缩性规则与供应和部署模型的组件和虚拟机关联起来。
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引用次数: 56
Homomorphic exclusive-or operation enhance secure searching on cloud storage 同态异或运算增强了云存储上的安全搜索
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.86
Shu Qin Ren, B. Tan, S. Sundaram, Taining Wang, Khin Mi Mi Aung
Enterprise cloud tenants would store their outsourced cloud data in encrypted form for data privacy and security. However, flexible data access functions such as data searching is usually sacrificed as a result. Thus, enterprise tenants demand secure data retrieval and computation solution from the cloud provider, which will allow them to utilize cloud services without the risks of leaking private data to outsiders and even service providers. In this paper, we propose an exclusive-or (XOR) homomorphism encryption scheme to support secure keyword searching on encrypted data. First, this scheme specifies a new data protection method by encrypting the data and randomizing it by performing XOR operation with a random bit-string. Second, this scheme can effectively protect data-in-transit against passive attack such as cipher text analysis due to the randomization. Third, this scheme is lightweight and only requires a symmetric encryption scheme and bitwise operations, which requires processing time in the order of milliseconds.
企业云租户将以加密形式存储其外包的云数据,以保护数据隐私和安全。然而,结果往往是牺牲了数据搜索等灵活的数据访问功能。因此,企业租户需要云提供商提供安全的数据检索和计算解决方案,这将使他们能够利用云服务,而不会有将私有数据泄露给外部人员甚至服务提供商的风险。本文提出了一种异或(XOR)同态加密方案,以支持对加密数据的安全关键字搜索。该方案首先对数据进行加密,并对随机位串进行异或操作,实现数据的随机化,从而提出了一种新的数据保护方法。其次,由于随机化,该方案可以有效地保护传输中的数据免受密文分析等被动攻击。第三,该方案是轻量级的,只需要对称加密方案和按位操作,这需要以毫秒为单位的处理时间。
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引用次数: 6
Seamless Enablement of Intelligent Protection for Enterprise Cloud Applications through Service Store 通过服务存储无缝实现企业云应用的智能保护
Pub Date : 2014-12-15 DOI: 10.1109/CloudCom.2014.92
Joshua Daniel, T. Dimitrakos, F. El-Moussa, G. Ducatel, P. Pawar, Ali Sajjad
Cloud IaaS and PaaS providers typically hold Cloud consumers accountable for protecting their applications, while Cloud users often find that protecting their proprietary system, application and data stacks on public or hybrid Cloud environments to be complex, expensive and time-consuming. In this paper we demonstrate, how integration of a security solution such as BT Intelligent Protection with the Service Store, results with security operations capability that can scale accordingly to the Cloud use. By enabling "click-to-buy" security services and "click-to-build" secure applications with a few mouse clicks, this integration creates a new paradigm for self-service Cloud-based integrity and security services.
云IaaS和PaaS提供商通常要求云消费者负责保护他们的应用程序,而云用户经常发现,在公共或混合云环境中保护他们的专有系统、应用程序和数据堆栈是复杂、昂贵和耗时的。在本文中,我们将演示如何将安全解决方案(如BT智能防护)与服务存储集成在一起,从而产生可以根据云使用相应地扩展的安全操作能力。通过启用“点击购买”安全服务和“点击构建”安全应用程序,只需点击几下鼠标,这种集成为自助式基于云的完整性和安全服务创建了一个新范例。
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引用次数: 9
期刊
2014 IEEE 6th International Conference on Cloud Computing Technology and Science
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