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    Prelude: Ensuring Inter-Domain Loop-Freedom in SDN-Enabled Networks

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    Type
    Conference Paper
    Authors
    Dethise, Arnaud cc
    Chiesa, Marco
    Canini, Marco cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Computer Science Program
    Date
    2018-07-16
    Online Publication Date
    2018-07-16
    Print Publication Date
    2018
    Permanent link to this record
    http://hdl.handle.net/10754/630818
    
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    Abstract
    Software-Defined eXchanges (SDXes) promise to improve the inter-domain routing ecosystem through SDN deployment. Yet, the naïve deployment of SDN on the Internet raises concerns about the correctness of the inter-domain data-plane. By allowing operators to deflect traffic from default BGP routes, SDN policies can create permanent forwarding loops that are not visible to the control-plane. We propose Prelude, a system for detecting SDNinduced forwarding loops between SDXes with high accuracy without leaking private routing information of network operators. To achieve this, we leverage Secure Multi-Party Computation (SMPC) techniques to build a novel and general privacy-preserving primitive that detects whether any subset of SDN rules might affect the same portion of traffic without learning anything about those rules. We then leverage this primitive as the main building block of a distributed system tailored to detect forwarding loops among any set of SDXes. We leverage the particular nature of SDXes to further improve the efficiency of our SMPC solution. The number of valid SDN rules rejected by our solution is 100x lower than previous privacy-preserving solutions, and provides better privacy guarantees. Furthermore, our solution naturally provides network operators with some insights on the cost of the deflected paths.
    Citation
    Dethise, A., Chiesa, M., & Canini, M. (2018). Prelude. Proceedings of the 2nd Asia-Pacific Workshop on Networking - APNet ’18. doi:10.1145/3232565.3232570
    Publisher
    Association for Computing Machinery (ACM)
    Journal
    Proceedings of the 2nd Asia-Pacific Workshop on Networking - APNet '18
    ISBN
    9781450363952
    DOI
    10.1145/3232565.3232570
    arXiv
    1806.09566
    ae974a485f413a2113503eed53cd6c53
    10.1145/3232565.3232570
    Scopus Count
    Collections
    Conference Papers; Computer Science Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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