BGP (Border Gateway Protocol) is a fundamental component of the current Internet infrastructure. However, BGP is vulnerable to a variety of attacks, since it cannot ensure the authenticity of the path attributes announced by BGP routers. Despite several solutions have been proposed to address this vulnerability, none of them is operational in real-world due to their immense impact on original BGP. In this paper, we propose a Deployable Path Validation Authentication scheme, which can effectively validate the path of BGP. Through analysis and simulation we show that this scheme has little impact on the performance and memory usage for the original BGP, and can be adopted in practice as an operational approach.
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