Internet is composed of a set of autonomous systems (AS) managed by an administrative authority. The Border Gateway Protocol (BGP) is the exterior routing protocol used to exchange network reachability between the border routers of each autonomous network. BGP allows the ASes to apply policies when they select the routes that their traffic will take. Policies are based on business relationships and traffic engineering constraints. It is currently assumed that the exchanged reachability information is correct. In other words, the ASes that originate a network prefix are supposed to be authorized to advertise it. It also means that the announced routing information is conformant with the routing policies of the ASes. This assumption is not true anymore. We review existing proposals aiming to solve internet routing security issues and present our contributions. First, we propose a system able to detect and to react to illegitimate advertisements. Then, we describe our current work that focuses on the specification of a collaborative framework between ASes aiming at cautiously select routes.
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- An Incremental Approach to Enhance the Accuracy of Internet Routing
- Springer Berlin Heidelberg