A survey of network virtualization

Chowdhury, Nahid-Ur-Rahman; Boutaba, Raouf

doi:10.1016/j.comnet.2009.10.017

Cited by 1,019 publications

(524 citation statements)

References 71 publications

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“…Virtual networks are not at all new in themselves; [15] provides a survey of technologies used at various layers. A number of network virtualisation architectures and frameworks have been proposed in the literature, including VINI [16], CABO [17], 4WARD VNet [18] and FEDERICA [19], to offer customised virtual networks with end-to-end control.…”

Section: Virtualisation Technology Supporting Cloud Networkingmentioning

confidence: 99%

Challenges for Cloud Networking Security

Schoo

Fusenig

Souza

et al. 2011

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Abstract. Cloud computing is widely considered as an attractive service model since the users commitments for investment and operations are minimised, and costs are in direct relation to usage and demand. However, when networking aspects for distributed clouds are considered, there is little support and the effort is often underestimated. The project SAIL is addressing cloud networking as the combination of management for cloud computing and vital networking capabilities between distributed cloud resources involved to improve the management of both. This position paper presents new security challenges as considered in SAIL for ensuring legitimate usage of cloud networking resources and for preventing misuse.

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Section: Virtualisation Technology Supporting Cloud Networkingmentioning

confidence: 99%

Challenges for Cloud Networking Security

Schoo

Fusenig

Souza

et al. 2011

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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“…After the virtualization of nodes and links, the industry as well as the academia discusses the virtualization of entire networks: network virtualization [8,15] envisions an Internet where customers (e.g., a startup company or a content distribution provider) can request virtual networks (VNets) on short notice and with arbitrary specifications on the required node resources and their connectivity. Indeed, first prototypes have emerged (e.g., in the European CHANGE and UNIFY projects, the American GENI project or the Asian AKARI project).…”

Section: Introductionmentioning

confidence: 99%

Adversarial topology discovery in network virtualization environments: a threat for ISPs?

2014

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Network virtualization is a new Internet paradigm which allows multiple virtual networks (VNets) to share the resources of a given physical infrastructure. The virtualization of entire networks is the natural next step after the virtualization of nodes and links.While the problem of how to embed a VNet ("guest network") on a given resource network ("host network") is algorithmically well-understood, much less is known about the security implications of this new technology. This paper introduces a new model to reason about one particular security threat: the leakage of information about the physical infrastructure-often a business secret.We initiate the study of this new problem and introduce the notion of request complexity which describes the number of VNet requests needed to fully disclose the substrate topology. We derive lower bounds and present algorithms achieving an asymptotically optimal request complexity for important graph classes such as trees, cactus graphs (complexity O(n)) as well as arbitrary graphs (complexity O(n 2 )). Moreover, a general motif-based topology discovery framework is described which exploits the poset structure of the VNet embedding relation.

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“…Virtualization is the key enabler for decoupling the physical sensor deployment from the applications running on top, and is thus a significant step towards the decoupling of ownerships in the Internet of Things. In rough analogy to virtualization in more "traditional" network infrastructures (both at the core and access network levels) [3], WSN virtualization aims to accommodate multiple logical network instances over a single physical network infrastructure with the ultimate goal of (a) supporting applications with different requirements both in terms of nodes and communication functionalities and (b) utilizing in an efficient and cost-effective manner the available network resources.…”

Section: Introductionmentioning

confidence: 99%

“…Whilst mechanisms are in place to facilitate virtualization in the core network [3], major challenges remain in networks that connect embedded sensor devices to the Internet. On the one hand, these have to do with individual functionalities of a VSN system related, for example, to middleware, routing, security, trust, and energy awareness of protocols and mechanisms at various layers of the communication protocol stack.…”

Section: Introductionmentioning

confidence: 99%