A path forward: Improving Internet routing security by enabling zones of trust
CoRR(2023)
Abstract
Although Internet routing security best practices have recently seen auspicious increases in uptake, ISPs have limited incentives to deploy them. They are operationally complex and expensive to implement, provide little competitive advantage, and protect only against origin hijacks, leaving unresolved the more general threat of path hijacks. We propose a new approach that achieves four design goals: improved incentive alignment to implement best practices; protection against path hijacks; expanded scope of such protection to customers of those engaged in the practices; and reliance on existing capabilities rather than needing complex new software in every participating router. Our proposal leverages an existing coherent core of interconnected ISPs to create a zone of trust, a topological region that protects not only all networks in the region, but all directly attached customers of those networks. Customers benefit from choosing ISPs committed to the practices, and ISPs thus benefit from committing to the practices. We compare our approach to other schemes, and discuss how a related proposal, ASPA, could be used to increase the scope of protection our scheme achieves. We hope this proposal inspires discussion of how the industry can make practical, measurable progress against the threat of route hijacks in the short term by leveraging institutionalized cooperation rooted in transparency and accountability.
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