Peer-to-peer systems

Rodrigues, Rodrigo; Druschel, Peter

doi:10.1145/1831407.1831427

Cited by 140 publications

(58 citation statements)

References 30 publications

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“…The overlay can be either flat or hierarchical, but typically requires the use of ad-hoc flooding techniques to query content stored within the overlay network [67]. Freenet, Gnutella, and BitTorrent are some examples of unstructured networks.…”

Section: Peer-to-peer Networkmentioning

confidence: 99%

Collaborative Network Security: Targeting Wide-area Routing and Edge-network Attacks

Hiran

2016

Linköping Studies in Science and Technology. Dissertations

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To ensure that services can be delivered reliably and continuously over the Internet, it is important that both Internet routes and edge networks are secured. However, the sophistication and distributed nature of many attacks that target wide-area routing and edge networks make it difficult for an individual network, user, or router to detect these attacks. Therefore collaboration is important. Although the benefits of collaboration between different network entities have been demonstrated, many open questions still remain, including how to best design distributed scalable mechanisms to mitigate attacks on the network infrastructure. This thesis makes several contributions that aim to secure the network infrastructure against attacks targeting wide-area routing and edge networks.First, we present a characterization of a controversial large-scale routing anomaly, in which a large Telecom operator hijacked a very large number of Internet routes belonging to other networks. We use publicly available data from the time of the incident to understand what can be learned about large-scale routing anomalies and what type of data should be collected in the future to diagnose and detect such anomalies.Second, we present multiple distributed mechanisms that enable collaboration and information sharing between different network entities that are affected by such attacks. The proposed mechanisms are applied in the contexts of collaborating Autonomous Systems (ASes), users, and servers, and are shown to help raise alerts for various attacks. Using a combination of data-driven analysis and simulations, based on publicly available real network data (including traceroutes, BGP announcements, and network relationship data), we show that our solutions are scalable, incur low communication and processing overhead, and provide attractive tradeoffs between attack detection and false alert rates.Finally, for a set of previously proposed routing security mechanisms, we consider the impact of regional deployment restrictions, the scale of the collaboration, and the size of the participants deploying the solutions. Although regional deployment can be seen as a restriction and the participation of large networks is often desirable, we find interesting cases where regional deployment can yield better results compared to random global deployment, and where smaller networks can play an important role in achieving better security gains. This study offers new insights towards incremental deployment of different classes of routing security mechanisms.This work was supported by the Swedish National Graduate School of Computer Science (CUGS) and the Internet Foundation in Sweden (IIS). iii Populärvetenskaplig sammanfattningInternet och dess tjänsterär mycket exponerade för attacker. Många av de kritiska protokoll och mekanismer som behövs för att leverera tjänsteröver internet designades för flera decennier sedan. Dessa protokoll och mekanismerär starkt beroende av tillit mellan olika nätverkskomponenter, såsom routers och servrar. Den ex...

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Section: Peer-to-peer Networkmentioning

confidence: 99%

Collaborative Network Security: Targeting Wide-area Routing and Edge-network Attacks

Hiran

2016

Linköping Studies in Science and Technology. Dissertations

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“…What the definition means is that a P2P network is a distributed network that exists out of many participating peers and has the following properties [92]:…”

Section: Definitionmentioning

confidence: 99%

“…Any node in the overlay network is then able to efficiently route a query with a given ID, to a node with an ID closest to the given ID. An accurate comparison is that unstructured overlays are good at finding "hay", while structured overlays are good at finding "needles" [92].…”

Section: Structured and Unstructured P2p Overlaysmentioning

confidence: 99%

A state management and persistency architecture for peer-to-peer massively multi-user virtual environments

Gilmore¹

2013

SIGMultimedia Rec.

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“…Peer-to-peer technologies (P2P) [37], Service-Oriented Computing (SOC) [33], or Cloud Computing [7] are considered to be suitable technologies to support these new models where there is a high number of entities offering services that change frequently and look for other entities to collaborate with in order to obtain a resource or to deal with a complex goal.…”

Section: Introductionmentioning

confidence: 99%

Combination of self-organization mechanisms to enhance service discovery in open systems

Val

Rebollo

Botti

2014

Information Sciences

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Decentralized systems have emerged as an alternative to centralized approaches for dealing with dynamic requirements in new business models. These systems should provide mechanisms that contribute to flexibility and facilitate adaptation to changes in the environment. In this paper, we present two self-organization mechanisms for a decentralized service discovery system in order to improve its performance. These mechanisms are based on local actions of agents that only consider local information about queries they forward during the discovery process. The self-organization actions are chosen by each agent individually when the agent considers them to be appropriate. The actions are: remaining in the system, leaving the system, cloning, and changing structural relations with other agents. We have evaluated each self-organization mechanism separately but also the combination of the two as the environmental conditions in the service demand change. The results show that the proposed self-organization mechanisms considerably improve the performance of the service discovery system.

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Peer-to-peer systems

Cited by 140 publications

References 30 publications

Collaborative Network Security: Targeting Wide-area Routing and Edge-network Attacks

Collaborative Network Security: Targeting Wide-area Routing and Edge-network Attacks

A state management and persistency architecture for peer-to-peer massively multi-user virtual environments

Combination of self-organization mechanisms to enhance service discovery in open systems

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