Publications

Publications in 2021 (English)

Filter by Year: All, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008,
Filter by Type: All, Book, Article, Chapter, Conference Proceedings, Edited Conference Proceedings, Master Thesis, Bachelor Thesis, Technical Report, Miscellaneous,
Filter by Language: All, English, German,

    2021

    • Tobias Haugg, Mohammad Fazel Soltani, Timo Häckel, Philipp Meyer, Franz Korf, and Thomas C. Schmidt. Simulation-based Evaluation of a Synchronous Transaction Model for Time-Sensitive Software-Defined Networks. In: Proceedings of the 8th International OMNeT++ Community Summit 2021. Oct. 2021,
      [Abstract], [Slides (pdf)], [ArXiv], [Bibtex]

      Real-time networks based on Ethernet require robust quality-of-service for time-critical traffic. The Time-Sensitive Networking (TSN) collection of standards enables this in real-time environments like vehicle on-board networks. Runtime reconfigurations in TSN must respect the deadlines of real-time traffic. Software-Defined Networking (SDN) moves the control plane of network devices to the SDN controller, making these networks programmable. This allows reconfigurations from a central point in the network. In this work, we present a transactional model for network reconfigurations that are synchronously executed in all network devices. We evaluate its performance in a case study against non-transactional reconfigurations and show that synchronous transactions enable consistency for reconfigurations in TSN without increased latencies for real-time frames.

      @InProceedings{   hshmk-ssttn-21,
        author        = {Tobias Haugg and Mohammad Fazel Soltani and Timo
                        H{\"a}ckel and Philipp Meyer and Franz Korf and Thomas C.
                        Schmidt},
        title         = {{Simulation-based Evaluation of a Synchronous Transaction
                        Model for Time-Sensitive Software-Defined Networks}},
        booktitle     = {Proceedings of the 8th International OMNeT++ Community
                        Summit 2021},
        month         = oct,
        year          = 2021,
        eprinttype    = {arxiv},
        eprint        = {2110.00236},
        abstract      = {Real-time networks based on Ethernet require robust
                        quality-of-service for time-critical traffic. The
                        Time-Sensitive Networking (TSN) collection of standards
                        enables this in real-time environments like vehicle
                        on-board networks. Runtime reconfigurations in TSN must
                        respect the deadlines of real-time traffic.
                        Software-Defined Networking (SDN) moves the control plane
                        of network devices to the SDN controller, making these
                        networks programmable. This allows reconfigurations from a
                        central point in the network. In this work, we present a
                        transactional model for network reconfigurations that are
                        synchronously executed in all network devices. We evaluate
                        its performance in a case study against non-transactional
                        reconfigurations and show that synchronous transactions
                        enable consistency for reconfigurations in TSN without
                        increased latencies for real-time frames. },
        groups        = {own, publications, simulation, omnet},
        langid        = {english},
        archiveprefix = {arXiv},
        primaryclass  = {cs.NI}
      }
    • Sebastian Szancer. Traffic Analysis in V2X Application-Level Gateways. Apr. 2021, Masterthesis. Hochschule für Angewandte Wissenschaften Hamburg.
      [Abstract], [Fulltext Document (pdf)], [Bibtex]

      Future cars will communicate with a variety of entities ranging from other vehicles and infrastructure, such as traffic lights, to Internet-based services running on remote servers. This V2X communication is essential for future vehicles, since it increases traffic safety and traffic efficiency, contributes to easier vehicle maintenance and also plays an important role for the realisation of autonomous vehicles. It is necessary that V2X communication is appropriately secured, especially since it includes safety-critical communication. This can be done with a V2X Security Gateway in the vehicle, which serves as a proxy for vehicle-internal services communicating with the outside world and ensures cryptographic security as well as security on the internet-, transport- and application layer. A central component of such a V2X Security Gateway is the V2X Application-Level Gateway, which ensures security on the application layer, including a context-sensitive semantic analysis of application data, detection of application layer protocol violations and detection of application layer DoS attacks. It also realises the proxy-functionality and ensures cryptographic security. This work presents a concept and prototype implementation of such a V2X Application-Level Gateway. The implementation was evaluated with the V2X Application-Level Gateway software run on an Intel NUC integrated in a test network representing an internal vehicle network. In this network, consisting of an Edgecore SDN switch and Intel NUCs and Raspberry Pis representing vehicle ECUs, several V2X scenarios like remotely controlling the vehicle trunk via HTTP, receiving traffic updates via MQTT and a basic V2V traffic safety service using the ETSI CAM were simulated. Each scenario included realistic attacks devised for evaluating the V2X Application-Level Gateway. It was shown that with the traffic analysis in the V2X Application-Level Gateway all attacks could be detected and handled.

      @MastersThesis{   s-tavag-21,
        author        = {Sebastian Szancer},
        title         = {{Traffic Analysis in V2X Application-Level Gateways}},
        month         = apr,
        year          = 2021,
        school        = {Hochschule f{\"u}r Angewandte Wissenschaften Hamburg},
        address       = {Hamburg},
        abstract      = {Future cars will communicate with a variety of entities
                        ranging from other vehicles and infrastructure, such as
                        traffic lights, to Internet-based services running on
                        remote servers. This V2X communication is essential for
                        future vehicles, since it increases traffic safety and
                        traffic efficiency, contributes to easier vehicle
                        maintenance and also plays an important role for the
                        realisation of autonomous vehicles. It is necessary that
                        V2X communication is appropriately secured, especially
                        since it includes safety-critical communication. This can
                        be done with a V2X Security Gateway in the vehicle, which
                        serves as a proxy for vehicle-internal services
                        communicating with the outside world and ensures
                        cryptographic security as well as security on the
                        internet-, transport- and application layer. A central
                        component of such a V2X Security Gateway is the V2X
                        Application-Level Gateway, which ensures security on the
                        application layer, including a context-sensitive semantic
                        analysis of application data, detection of application
                        layer protocol violations and detection of application
                        layer DoS attacks. It also realises the proxy-functionality
                        and ensures cryptographic security. This work presents a
                        concept and prototype implementation of such a V2X
                        Application-Level Gateway. The implementation was evaluated
                        with the V2X Application-Level Gateway software run on an
                        Intel NUC integrated in a test network representing an
                        internal vehicle network. In this network, consisting of an
                        Edgecore SDN switch and Intel NUCs and Raspberry Pis
                        representing vehicle ECUs, several V2X scenarios like
                        remotely controlling the vehicle trunk via HTTP, receiving
                        traffic updates via MQTT and a basic V2V traffic safety
                        service using the ETSI CAM were simulated. Each scenario
                        included realistic attacks devised for evaluating the V2X
                        Application-Level Gateway. It was shown that with the
                        traffic analysis in the V2X Application-Level Gateway all
                        attacks could be detected and handled.},
        type          = {mastersthesis},
        entrysubtype  = {mastersthesis},
        langid        = {english}
      }
    • Mehmet Cakir. Security with Software-Defined Networking in Automotive Networks - Forschungswerkstatt 1. Feb. 2021,
      [Abstract], [Fulltext Document (pdf)], [Slides (pdf)], [Bibtex]

      Cars are constantly equipped with new functions and intelligence. As the car becomes more open to it's environment using Vehicle-to-Everything (V2X) communication technologies, the necessity of security requirements becomes apparent. The concept of Software-Defined Networking (SDN) promises to simplify the control over network flows and devices. This work shows the current state of automotive networks and their security requirements. Furthermore, the concept of SDN and security concepts of SDN are explained. Finally, expectations of the use of SDN in cars will be discussed.

      @TechReport{      c-ssdna-21,
        author        = {Mehmet Cakir},
        title         = {{Security with Software-Defined Networking in Automotive
                        Networks - Forschungswerkstatt 1}},
        month         = feb,
        year          = 2021,
        institution   = {CoRE Research Group, Hochschule f{\"u}r Angewandte
                        Wissenschaften Hamburg},
        abstract      = {Cars are constantly equipped with new functions and
                        intelligence. As the car becomes more open to it's
                        environment using Vehicle-to-Everything (V2X) communication
                        technologies, the necessity of security requirements
                        becomes apparent. The concept of Software-Defined
                        Networking (SDN) promises to simplify the control over
                        network flows and devices. This work shows the current
                        state of automotive networks and their security
                        requirements. Furthermore, the concept of SDN and security
                        concepts of SDN are explained. Finally, expectations of the
                        use of SDN in cars will be discussed.},
        groups        = {own, seminar, security, automotive, sdn},
        langid        = {english}
      }