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This paper revolves around the concept of utilizing the modern smartphone communication capabilities to transmit messages through an ad hoc network during a disaster, which renders the traditional cellular base station inaccessible. Due to dynamic and decentralized nature of the considered environment, epidemic algorithms present themselves as a suitable option for message dissemination. We consider...
Network Security Appliances are deployed at the vantage point of the Internet to detect security events and prevent attacks. However, these appliances are not so effective when it comes to distributed attacks such as DDoS. This paper presents a design and implementation of collaborative network security management system (CNSMS), which organize the NetSecu nodes into a hybrid P2P and hierarchy architecture...
Content pollution problem has attracted broad attention due to its impacts on P2P networks' efficiency and availability. Especially for Bit Torrent users, unmanageable versions of BT torrents and chunk-based file sharing mode make it more difficult to avoid pollution dissemination. In our paper, we propose a smart version selection strategy based on taste buddies to help users select high-quality...
Despite the immense potential of Peer-to-Peer (P2P) networks in facilitating collaborative applications, they are generally considered to be free havens for pirated multimedia content. Ensuring the proper distribution and usage of multimedia content in P2P networks has become increasingly critical. Encryption can provide multimedia contents with the desired security during transmission, which disappears...
MANET, within which nodes can move arbitrarily, is a self-organized network without fixed infrastructure. However, due to the lack of infrastructure, limited resources and vulnerability of wireless links, security in mobile ad hoc networks is considered to be much more difficult than in traditional wired networks. Building trust relationships between each node can effectively improve the network security...
In P2P file-sharing applications, distributed virtual payment mechanism is designed to encourage resource sharing among peers and thus restrain free-riding behaviors. However, it does not provide any protection on the security of the transaction process and the quality of the trading contents. We design a fair transaction mechanism for P2P file-sharing applications, in which a trusted third party...
Many P2P applications necessitate statistics aggregate computation of certain information among all individual peers. In contrast to methods of constructing aggregation tree, centralized computing and flooding, gossip-based mechanism has the advantages of good robustness and moderate communication and computing costs. Most algorithms of this type perform aggregate computation recursively on successive...
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