A mechanism based on reputation in P2P networks to counter malicious packet dropping |
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Authors: | Hao Peng Songnian Lu Jianhua Li Aixin Zhang Dandan Zhao |
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Institution: | PENG Hao1,LU Songnian1,2,LI Jianhua1,2,ZHANG Aixin2,ZHAO Dandan1 1.Electronic Engineering Department,Shanghai Jiao Tong University,Shanghai 200240,China;2.School of Information Security Engineering,Shanghai Jiao Tong University,Shanghai 200240,China |
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Abstract: | In P2P (Peer-to-Peer) networks, some malicious peers can impact on overall networks performance. One of the malicious behaviors
of these peers is malicious packet dropping. In this paper, our focus is to detect and to exclude peers that misbehave by
dropping some or all packets. Here, we propose a reputation-based mechanism for solving the problem efficiently. The proposed
mechanism uses both direct reputation information and indirect reputation information to compute comprehensive reputation
of a peer. At the same time, history reputation information is also taken into account to provide faults tolerance capability
and we regulate the imprecision based on the fact that the cause of packet dropping can be complex. Finally, the peers with
bad comprehensive reputation can be detected easily and then will be excluded from the network. In this way, our proposed
mechanism improves the performance of P2P networks without increasing computational overhead. |
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Keywords: | P2P (Peer-to-Peer) reputation malicious peers packet dropping |
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