@misc{SchusterPaulKoenig, author = {Schuster, Franka and Paul, Andreas and K{\"o}nig, Hartmut}, title = {Messung der technischen IT-Sicherheit in Energieversorgungsanlagen zur Erf{\"u}llung des IT-Sicherheitsgesetzes}, series = {International Journal for Electricy and Heat Generation, VGB Powertech}, volume = {97}, journal = {International Journal for Electricy and Heat Generation, VGB Powertech}, number = {3}, issn = {1435-3199}, pages = {76 -- 82}, language = {de} } @inproceedings{KoenigUlrichHeiner, author = {K{\"o}nig, Hartmut and Ulrich, Andreas and Heiner, Monika}, title = {Design for Testability: A Step-wise Approach to Protocol Testing}, series = {Testing of Communicating Systems, IFIP TC6 10th International Workshop on Testing of Communicating Systems, 8-10 September 1997, Cheju Island, Korea}, booktitle = {Testing of Communicating Systems, IFIP TC6 10th International Workshop on Testing of Communicating Systems, 8-10 September 1997, Cheju Island, Korea}, editor = {Kim, Myungchul and Kang, Sungwon and Hong, Keesoo}, publisher = {Springer}, address = {Boston}, isbn = {978-1-4757-6701-8}, doi = {10.1007/978-0-387-35198-8_9}, pages = {125 -- 140}, language = {en} } @inproceedings{CwalinskiKoenig, author = {Cwalinski, Radoslaw and K{\"o}nig, Hartmut}, title = {Identifying Malicious Traffic in Software-Defined Wireless Local Area Networks}, series = {2018 International Conference on Computing, Networking and Communications (ICNC), Maui, HI, USA, 2018}, booktitle = {2018 International Conference on Computing, Networking and Communications (ICNC), Maui, HI, USA, 2018}, publisher = {IEEE}, isbn = {978-1-5386-3652-7}, doi = {10.1109/ICCNC.2018.8390307}, pages = {195 -- 199}, language = {en} } @inproceedings{SchusterKoppPauletal., author = {Schuster, Franka and Kopp, Fabian Malte and Paul, Andreas and K{\"o}nig, Hartmut}, title = {Attack and Fault Detection in Process Control Communication Using Unsupervised Machine Learning}, series = {IEEE 16th International Conference on Industrial Informatics (INDIN), Porto, Portugal, 18-20 July 2018}, booktitle = {IEEE 16th International Conference on Industrial Informatics (INDIN), Porto, Portugal, 18-20 July 2018}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5386-4829-2}, doi = {10.1109/INDIN.2018.8472054}, pages = {433 -- 438}, language = {en} } @inproceedings{SchusterPaulKoppetal., author = {Schuster, Franka and Paul, Andreas and Kopp, Fabian Malte and K{\"o}nig, Hartmut}, title = {Catching Intrusions: Classifier Performances for Detecting Network-specific Anomalies in Energy Systems}, series = {2018 International Conference on Smart Energy Systems and Technologies (SEST), Seville, Spain, September 2018}, booktitle = {2018 International Conference on Smart Energy Systems and Technologies (SEST), Seville, Spain, September 2018}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5386-5326-5}, doi = {10.1109/SEST.2018.8495702}, pages = {6}, language = {en} } @inproceedings{CwalinskiKoenig, author = {Cwalinski, Radoslaw and K{\"o}nig, Hartmut}, title = {SDN-based Attack Detection in Wireless Local Area Networks}, series = {4th IEEE Conference on Network Softwarization and Workshops (NetSoft), Montreal, QC, 2018}, booktitle = {4th IEEE Conference on Network Softwarization and Workshops (NetSoft), Montreal, QC, 2018}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5386-4633-5}, doi = {10.1109/NETSOFT.2018.8460121}, pages = {207 -- 211}, language = {en} } @misc{RietzCwalinskiKoenigetal., author = {Rietz, Ren{\´e} and Cwalinski, Radoslaw and K{\"o}nig, Hartmut and Brinner, Andreas}, title = {An SDN-based Approach to Ward of LAN Attacks}, series = {Journal Computer Networks and Communications}, volume = {2018}, journal = {Journal Computer Networks and Communications}, doi = {10.1155/2018/4127487}, pages = {12}, language = {en} } @misc{CwalinskiRietzVogeletal., author = {Cwalinski, Radoslaw and Rietz, Ren{\´e} and Vogel, Michael and K{\"o}nig, Hartmut}, title = {An SDN-based Approach to Protect Communication Between Virtual Machines}, series = {IEEE 44th Conference on Local Computer Networks (LCN), October 14-17, 2019, Osnabr{\"u}ck, Germany.}, journal = {IEEE 44th Conference on Local Computer Networks (LCN), October 14-17, 2019, Osnabr{\"u}ck, Germany.}, publisher = {IEEE}, isbn = {978-1-7281-1028-8}, pages = {465 -- 468}, language = {en} } @misc{BoehmKoenig, author = {B{\"o}hm, Sebastian and K{\"o}nig, Hartmut}, title = {SEmulate: Seamless Network Protocol Simulation and Radio Channel Emulation for Wireless Sensor Networks}, series = {15th Annual Conference on Wireless On-demand Network Systems and Services (WONS), 22-24 Jan. 2019, Wengen, Switzerland.}, journal = {15th Annual Conference on Wireless On-demand Network Systems and Services (WONS), 22-24 Jan. 2019, Wengen, Switzerland.}, publisher = {IEEE}, isbn = {978-3-903176-13-3}, doi = {10.23919/WONS.2019.8795495}, pages = {8}, abstract = {Low-rate and low-power wireless communications are still the main drivers for innovative industrial automation and the Internet of Things (IoT). Physical mobility is one of the most important challenges for them. Common wireless technologies and protocols, e.g., WirelessHART and ISA100.11a Wireless for industrial process plants, ZigBee for building automation, or 6LoWPAN and 6TiSCH in context of the IoT, are based on the IEEE 802.15.4 standard. Event-based simulation is the method of choice for analyzing network protocols and algorithmic applications of such distributed sensor applications. Performance measurements and holistic evaluations, however, are greatly influenced by the underlying hardware resources, physical layer protocols, and radio channel conditions, which are usually not considered or highly abstracted in network simulations. In this paper we present SEmulate, a hybrid system for seamless (network) simulation and hardware-based emulation for wireless sensor networks based on the IEEE 802.15.4 protocol standard, which takes the hardware aspects into account by applying an Hardware-in-the-Loop (HIL) approach.}, language = {en} } @misc{MehnerKoenig, author = {Mehner, Stefan and K{\"o}nig, Hartmut}, title = {No Need to Marry to Change Your Name! Attacking Profinet IO Automation Networks Using DCP}, series = {Detection of Intrusions and Malware, and Vulnerability Assessment 16th International Conference, DIMVA 2019, Gothenburg, Sweden, June 19-20, 2019, Proceedings}, journal = {Detection of Intrusions and Malware, and Vulnerability Assessment 16th International Conference, DIMVA 2019, Gothenburg, Sweden, June 19-20, 2019, Proceedings}, editor = {Perdisci, Roberto and Maurice, Cl{\´e}mentine and Giacinto, Giorgio and Almgren, Magnus}, publisher = {Springer}, isbn = {978-3-030-22037-2}, doi = {10.1007/978-3-030-22038-9_19}, pages = {396 -- 414}, abstract = {Current developments in digitization and industry 4.0 bear new challenges for automation systems. In order to enable interoperability and vertical integration of corporate management systems, these networks have evolved from formerly proprietary solutions to the application of Ethernet-based communication and internet standards. This development is accompanied by an increase in the number of threats. Although the most critical IT protection objective for automation systems is availability, usually no security mechanisms have been integrated into automation protocols. Also Ethernet offers no protection by design for these protocols. One of the most popular real-time protocols for industrial applications is Profinet IO. In this paper, we describe a Denial-of-Service attack on Profinet IO that exploits a vulnerability in the Discovery and Basic Configuration Protocol (DCP) which interrupts the Application Relationship between an IO Controller and an IO Device, and thus prevents the system from being repaired by the operator. The attack combines port stealing with the sending of forged DCP packets and causes a system downtime, which in affected production networks probably lead to a serious financial damage and, in case of critical infrastructures, even represents a high risk for the supply of society. We demonstrate the practical feasibility of the attack using realistic hardware and scenarios and discuss its significance for also other setups.}, language = {en} } @incollection{RieckWressneggerKoenigetal., author = {Rieck, Konrad and Wressnegger, Christian and K{\"o}nig, Hartmut and Paul, Andreas and Schuster, Franka and Kanisch, Heiko and Moder, Christoph}, title = {Werkzeuge und Ver{\"o}ffentlichungen}, series = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, booktitle = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, editor = {Rudel, Steffi and Lechner, Ulrike}, edition = {1. Auflage}, publisher = {Professur f{\"u}r Wirtschaftsinformatik, Universit{\"a}t der Bundeswehr M{\"u}nchen}, address = {Neubiberg}, isbn = {978-3-943207-33-0}, pages = {S. 85}, language = {de} } @incollection{RieckWressneggerKoenigetal., author = {Rieck, Konrad and Wressnegger, Christian and K{\"o}nig, Hartmut and Paul, Andreas and Schuster, Franka and Kanisch, Heiko and Moder, Christoph}, title = {Implementierung und Umsetzung}, series = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, booktitle = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, editor = {Rudel, Steffi and Lechner, Ulrike}, edition = {1. Auflage}, publisher = {Professur f{\"u}r Wirtschaftsinformatik, Universit{\"a}t der Bundeswehr M{\"u}nchen}, address = {Neubiberg}, isbn = {978-3-943207-33-0}, pages = {122 -- 124}, language = {de} } @incollection{SchusterPaulKoenig, author = {Schuster, Franka and Paul, Andreas and K{\"o}nig, Hartmut}, title = {Anwendung des SICIA-Verfahrens in der Praxis - am Beispiel eines ISMS}, series = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, booktitle = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, editor = {Rudel, Steffi and Lechner, Ulrike}, edition = {1. Auflage}, publisher = {Professur f{\"u}r Wirtschaftsinformatik, Universit{\"a}t der Bundeswehr M{\"u}nchen}, address = {Neubiberg}, isbn = {978-3-943207-33-0}, pages = {139 -- 144}, language = {de} } @misc{SchusterPaulMehneretal., author = {Schuster, Franka and Paul, Andreas and Mehner, Stefan and K{\"o}nig, Hartmut and Kanisch, Heiko}, title = {IT-Sicherheit im Kraftwerk - Methoden zur automatisierten Sicherheitsbewertung und Anomalieerkennung in hochsensiblen Netzen}, series = {51. Kraftwerkstechnisches Kolloquium, 21. - 23. Oktober 2019, Dresden}, journal = {51. Kraftwerkstechnisches Kolloquium, 21. - 23. Oktober 2019, Dresden}, publisher = {SAXONIA Standortentwicklungs- und -verwaltungsgesellschaft mbH}, address = {Freiberg}, isbn = {978-3-934409-94-1}, pages = {680 -- 703}, abstract = {Die zunehmende Digitalisierung auch in Kraftwerken erfordert entsprechend auf diesen Bereich zugeschnittene IT-Sicherheitsverfahren und -technologien. Aktuell stellt die obligatorische Implementierung eines angemessenen Sicherheitsprozesses, wie eines Informationssicherheitsmanagementsystems (ISMS), Betreiber von Erzeugungsanlagen, Energienetzen und anderen kritischen Infrastrukturen vor eine große Herausforderung, denn es gilt, zahlreiche Anforderungen bei der Implementierung zu erf{\"u}llen, ohne dass konkrete Methoden zur Umsetzung verf{\"u}gbar sind. Gleichzeitig ist derEinsatz von IT-Sicherheitstechnologien aus der B{\"u}rowelt aufgrund g{\"a}nzlich anderer Eigenschaften und Anforderungen industrieller Netze kaum m{\"o}glich. Zur Adressierung dieser Problematik wurden von der Brandenburgischen Technischen Universit{\"a}t Cottbus-Senftenberg (BTU) und der Lausitz Energie Kraftwerke AG (LEAG) innovative Verfahren zur (1) systematischen Bewertung sowie (2) Verbesserung der IT-Sicherheit in hochsensiblen Netzen konzipiert und prototypisch implementiert, die ein diesem Beitrag mit den zugeh{\"o}rigen Forschungsprojekten vorgestellt werden. Um eine Beeinflussung empfindlicher Kraftwerksanlagen auszuschließen, wurde f{\"u}r alle Methoden ein nichtintrusiver Entwicklungsansatz verfolgt, der sich durch eine passive und vom jeweiligen industriellen Prozess vollst{\"a}ndig entkoppelte Analyse auszeichnet und sich daher f{\"u}r einen breiten Einsatz in Netzen mit hohen Verf{\"u}gbarkeitsanforderungen eignet.}, language = {de} } @incollection{RieckWressneggerKoenigetal., author = {Rieck, Konrad and Wressnegger, Christian and K{\"o}nig, Hartmut and Paul, Andreas and Schuster, Franka and Kanisch, Heiko and Moder, Christoph}, title = {INDI - Intelligente Intrusion-Detection-Systeme f{\"u}r Industrienetze}, series = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, booktitle = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, editor = {Rudel, Steffi and Lechner, Ulrike}, edition = {1. Auflage}, publisher = {Professur f{\"u}r Wirtschaftsinformatik, Universit{\"a}t der Bundeswehr M{\"u}nchen}, address = {Neubiberg}, isbn = {978-3-943207-33-0}, pages = {S. 19}, language = {de} } @incollection{SchusterPaulKoenig, author = {Schuster, Franka and Paul, Andreas and K{\"o}nig, Hartmut}, title = {SICIA - IT-Sicherheit in kritischen Netzen messen und systematisch verbessern}, series = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, booktitle = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, editor = {Rudel, Steffi and Lechner, Ulrike}, edition = {1. Auflage}, publisher = {Professur f{\"u}r Wirtschaftsinformatik, Universit{\"a}t der Bundeswehr M{\"u}nchen}, address = {Neubiberg}, isbn = {978-3-943207-33-0}, pages = {27 -- 28}, language = {de} } @incollection{RieckWressneggerKoenigetal., author = {Rieck, Konrad and Wressnegger, Christian and K{\"o}nig, Hartmut and Paul, Andreas and Schuster, Franka and Kanisch, Heiko and Moder, Christoph}, title = {Prozessnahe Kommunikation als besondere Herausforderung}, series = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, booktitle = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, editor = {Rudel, Steffi and Lechner, Ulrike}, edition = {1. Auflage}, publisher = {Professur f{\"u}r Wirtschaftsinformatik, Universit{\"a}t der Bundeswehr M{\"u}nchen}, address = {Neubiberg}, isbn = {978-3-943207-33-0}, pages = {S. 57}, language = {de} } @incollection{KanischSchusterKoenig, author = {Kanisch, Heiko and Schuster, Franka and K{\"o}nig, Hartmut}, title = {Informationstechnik in der Energieversorgung - Besonderheiten und Regularien}, series = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, booktitle = {IT-Sicherheit f{\"u}r Kritische Infrastrukturen - State of the Art : Ergebnisse des F{\"o}rderschwerpunkts IT-Sicherheit f{\"u}r Kritische Infrastrukturen ITS/KRITIS des BMBF}, editor = {Rudel, Steffi and Lechner, Ulrike}, edition = {1. Auflage}, publisher = {Professur f{\"u}r Wirtschaftsinformatik, Universit{\"a}t der Bundeswehr M{\"u}nchen}, address = {Neubiberg}, isbn = {978-3-943207-33-0}, pages = {67 -- 68}, language = {de} } @misc{VogelSchusterKoppetal., author = {Vogel, Michael and Schuster, Franka and Kopp, Fabian Malte and K{\"o}nig, Hartmut}, title = {Data Volume Reduction for Deep Packet Inspection by Multi-layer Application Determination}, series = {2022 IEEE International Conference on Cyber Security and Resilience (CSR), 27-29 July 2022, Rhodes, Greece}, journal = {2022 IEEE International Conference on Cyber Security and Resilience (CSR), 27-29 July 2022, Rhodes, Greece}, publisher = {IEEE}, isbn = {978-1-6654-9952-1}, doi = {10.1109/CSR54599.2022.9850293}, pages = {6}, abstract = {Attack detection in enterprise networks is increasingly faced with large data volumes, in part high data bursts, and heavily fluctuating data flows that often cause arbitrary discarding of data packets in overload situations which can be used by attackers to hide attack activities. Attack detection systems usually configure a comprehensive set of signatures for known vulnerabilities in different operating systems, protocols, and applications. Many of these signatures, however, are not relevant in each context, since certain vulnerabilities have already been eliminated, or the vulnerable applications or operating system versions, respectively, are not installed on the involved systems. In this paper, we present an approach for clustering data flows to assign them to dedicated analysis units that contain only signature sets relevant for the analysis of these flows. We discuss the performance of this clustering and show how it can be used in practice to improve the efficiency of an analysis pipeline.}, language = {en} }