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Rule-Based Synthesis of Chains of Security Functions for Software-Defined Networks

Nicolas Schnepf 1, 2 Rémi Badonnel 1 Abdelkader Lahmadi 1 Stephan Merz 2
1 RESIST - Resilience and Elasticity for Security and ScalabiliTy of dynamic networked systems
Inria Nancy - Grand Est, LORIA - NSS - Department of Networks, Systems and Services
2 VERIDIS - Modeling and Verification of Distributed Algorithms and Systems
LORIA - FM - Department of Formal Methods , Inria Nancy - Grand Est, MPII - Max-Planck-Institut für Informatik
Abstract : Software-defined networks (SDN) offer a high degree of programmabil-ity for handling and forwarding packets. In particular, they allow network administrators to combine different security functions, such as firewalls, intrusion detection systems, and external services, into security chains designed to prevent or mitigate attacks against end user applications. These chains can benefit from formal techniques for their automated construction and verification. We propose in this paper a rule-based system for automating the composition and configuration of such chains for Android applications. Given the network characterization of an application and the set of permissions it requires, our rules construct an abstract representation of a custom security chain. This representation is then translated into a concrete implementation of the chain in Pyretic, a domain-specific language for programming SDN controllers. We prove that the chains produced by our rules satisfy a number of correctness properties such as the absence of black holes or loops, and shadowing freedom, and that they are coherent with the underlying security policy.
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Contributor : Rémi Badonnel <>
Submitted on : Wednesday, December 11, 2019 - 3:41:04 PM
Last modification on : Friday, February 21, 2020 - 4:12:46 PM
Long-term archiving on: : Thursday, March 12, 2020 - 12:58:22 PM

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Nicolas Schnepf, Rémi Badonnel, Abdelkader Lahmadi, Stephan Merz. Rule-Based Synthesis of Chains of Security Functions for Software-Defined Networks. Electronic Communications of the EASST, Universitätsbibliothek TU Berlin, 2019, 076, ⟨10.14279/tuj.eceasst.76.1075.1042⟩. ⟨hal-02397981⟩

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