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Distributed Denial of Service (DDoS) attacks have plagued the Internet fordecades, but the basic defense approaches have not fundamentally changed.Rather, the size and rate of growth in attacks have actually outpaced carriers'and DDoS mitigation services' growth, calling for new solutions that can be,partially or fully, deployed imminently and exhibit effectiveness. In thispaper, we examine the basic functions in Named Data Networking (NDN), a newlyproposed Internet architecture, that can address the principle weaknesses intoday's IP networks. We demonstrate by a new DDoS mitigation solution over NDN,Fine-grained Interest Traffic Throttling FITT, that NDN's architecturalchanges, even when incrementally deployed, can make DDoS attacks fundamentallymore difficult to launch and less effective. FITT leverages the NDN design toenable the network to detect DDoS from victim's feedback, throttles DDoStraffic by reverse its exact paths through the network, and enforces controlover the misbehaving entities at their sources. Our extensive simulationresults show that FITT can throttle attack traffic with one-way time delay fromthe victim to the NDN gateway; upon activation, FITT effectively stop attacktraffic from impacting benign flows, resulting in over 99\% of packets reachingvictims being legitimate ones. We further demonstrate that service providersmay implement NDN/FITT on existing CDN nodes as an incrementally deployablesolution to effectuate the application level remediation at the sources, whichremains unattainable in today's DDoS mitigation approaches.

Expect More from the Networking: DDoS Mitigation by FITT in Named Data Networking