Rewarding relays for decentralised NAT traversal using smart contracts

Proceedings of the Twenty-First International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing Pub Date : 2020-10-11 DOI:10.1145/3397166.3412799

Navin V. Keizer, Onur Ascigil, I. Psaras, G. Pavlou

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引用次数: 3

Abstract

Traversing NAT's remains a big issue in P2P networks, and many of the previously proposed solutions are incompatible with truly decentralised emerging applications. Such applications need a decentralised NAT traversal solution without trusted centralised servers. In this paper we present a decentralised, relay-based NAT traversal system, where any reachable node is able to assist an unreachable node in NAT traversal. Smart contracts on the Ethereum blockchain are used to ensure fair rewards. Besides financial incentives, a reputation system based on transactions on-chain is used to mitigate against malicious behaviour, and guide peer discovery. Evaluation of our system shows that a combination of historic performance metrics leads to an optimal scoring function, that the system takes little time to reach stability from inception, and that the system is resilient against various attacks. Implementation of the smart contract shows that the cost for participants is manageable.

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奖励使用智能合约进行分散NAT遍历的中继

在P2P网络中，穿越NAT仍然是一个大问题，许多先前提出的解决方案与真正分散的新兴应用程序不兼容。这样的应用程序需要分散的NAT穿越解决方案，而不需要可信的集中式服务器。在本文中，我们提出了一个分散的，基于中继的NAT穿越系统，其中任何可到达的节点都能够在NAT穿越中帮助不可到达的节点。以太坊区块链上的智能合约用于确保公平的奖励。除了财务激励外，基于链上交易的声誉系统还用于减轻恶意行为，并指导同行发现。对我们系统的评估表明，历史性能指标的组合导致了最优的评分函数，系统从一开始就花费很少的时间达到稳定，并且系统对各种攻击具有弹性。智能合约的实施表明，参与者的成本是可控的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the Twenty-First International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing

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