Mobile peer-to-peer approach for social computing services in distributed environment

Author(s):  
Ha Manh Tran ◽  
Khoa Van Huynh ◽  
Khoi Duy Vo ◽  
Son Thanh Le
2018 ◽  
Vol 7 (2.7) ◽  
pp. 1051
Author(s):  
Gera Jaideep ◽  
Bhanu Prakash Battula

Peer to Peer (P2P) network in the real world is a class of systems that are made up of thousands of nodes in distributed environments. The nodes are decentralized in nature. P2P networks are widely used for sharing resources and information with ease. Gnutella is one of the well known examples for such network. Since these networks spread across the globe with large scale deployment of nodes, adversaries use them as a vehicle to launch DDoS attacks. P2P networks are exploited to make attacks over hosts that provide critical services to large number of clients across the globe. As the attacker does not make a direct attack it is hard to detect such attacks and considered to be high risk threat to Internet based applications. Many techniques came into existence to defeat such attacks. Still, it is an open problem to be addressed as the flooding-based DDoS is difficult to handle as huge number of nodes are compromised to make attack and source address spoofing is employed. In this paper, we proposed a framework to identify and secure P2P communications from a DDoS attacks in distributed environment. Time-to-Live value and distance between source and victim are considered in the proposed framework. A special agent is used to handle information about nodes, their capacity, and bandwidth for efficient trace back. A Simulation study has been made using NS2 and the experimental results reveal the significance of the proposed framework in defending P2P network and target hosts from high risk DDoS attacks.  


Author(s):  
Punit Gupta ◽  
Ravi Shankar Jha

With increase of information sharing over the internet or intranet, we require techniques to increase the availability of shared resource over large number of users trying to access the resources at the same time. Many techniques are being proposed to make access easy and more secure in distributed environment. Information retrieval plays an important to serve the most reliant data in least waiting, this chapter discuses all such techniques for information retrieval and sharing over the cloud infrastructure. Cloud Computing services provide better performance in terms of resource sharing and resource access with high reliability and scalability under high load.


Author(s):  
Leonardo B. Oliveira ◽  
Isabela G. Siqueira ◽  
Daniel F. Macedo ◽  
José M. Nogueira ◽  
Antonio A.F. Loureiro

Both Mobile Ad hoc Networks (MANETs) and Peer-to-Peer (P2P) networks are decentralized self-organizing networks with a dynamic topology, used to route queries in a distributed environment. However, whilst MANETs are composed of resource-constrained devices susceptible to faults, P2P networks are popular for their resilience and fault-tolerance. This makes P2P networks the ideal data sharing system for MANETs. This chapter focuses on the integration of these networks. More specifically, the authors evaluate routing strategies of both the network layer and the application layer. Their results indicate that the performance of the protocols depends greatly on the environment and point out the need for new approaches.


Author(s):  
Punit Gupta ◽  
Ravi Shankar Jha

With increase of information sharing over the internet or intranet, we require techniques to increase the availability of shared resource over large number of users trying to access the resources at the same time. Many techniques are being proposed to make access easy and more secure in distributed environment. Information retrieval plays an important to serve the most reliant data in least waiting, this chapter discuses all such techniques for information retrieval and sharing over the cloud infrastructure. Cloud Computing services provide better performance in terms of resource sharing and resource access with high reliability and scalability under high load.


Author(s):  
Manh Ha Tran ◽  
Van Sinh Nguyen ◽  
Synh Viet Uyen Ha

This paper presents a social network with a peer-to-peer architecture that facilitates social computing services in distributed environments. This social network aims to provide users the capability of managing the dissemination of user data, searching user data on the data silos of the network, and consolidating user data from various social networks. The social network employs a super peer peer-to-peer architecture that contains peers and super peers. Users use peers to participate the network and services. Peers with sufficient storage, bandwidth and processing power become super peers that support peers for complex operations such as user authentication or group communication. We have extended the Gnutella protocol to provide the authentication and posting services on the social network. The design of these services copes with the distributed setting of the social network. The evaluation of the prototyping social network has performed on a number of laboratory workstations to investigate its scalability, reliability and performance.


Author(s):  
Walter Castelnovo

Connected Government requires different government organizations to connect seamlessly across functions, agencies, and jurisdictions in order to deliver effective and efficient services to citizens and businesses. In the countries of the European Union, this also involves the possibility of delivering cross-border services, which is an important step toward a truly united Europe. To achieve this goal, European citizens and businesses should be able to interact with different public administrations in different Member States in a seamless way to perceive them as a single entity. Interoperability, which is a key factor for Connected Government, is not enough in order to achieve this result, since it usually does not consider the social dimension of organizations. This dimension is at the basis of co-operability, which is a form of non-technical interoperability that allows different organizations to function together essentially as a single organization. In this chapter, it is argued that, due to their unique capacity of coupling several technologies and processes with interpersonal styles, awareness, communication tools, and conversational models, the integration of social computing services and tools within inter-organizational workflows can make them more efficient and effective. It can also support the “learning” process that leads different organizations to achieve co-operability.


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