@misc{Koenig, author = {K{\"o}nig, Hartmut}, title = {Network Attack Detection and Defense}, series = {Praxis der Informationsverarbeitung und Kommunikation : (PIK)}, volume = {35}, journal = {Praxis der Informationsverarbeitung und Kommunikation : (PIK)}, number = {1}, issn = {0930-5157}, doi = {10.1515/pik-2012-0001}, pages = {S. 1}, language = {en} } @inproceedings{PinkPietschKoenig, author = {Pink, Mario and Pietsch, Thomas and K{\"o}nig, Hartmut}, title = {Towards a seamless mobility solution for the real world: Handover decision}, series = {Hand-over decision, International Symposium on Wireless Communication Systems 2012, August 2012, Paris, France}, booktitle = {Hand-over decision, International Symposium on Wireless Communication Systems 2012, August 2012, Paris, France}, publisher = {IEEE}, isbn = {978-1-4673-0761-1}, doi = {10.1109/ISWCS.2012.6328448}, pages = {651 -- 655}, abstract = {The increasing use of wireless networks has raised the desire to have not only a stable and good quality access to the network, but also to seamlessly change the network when moving. Various handover algorithms have been proposed to handle this situation. Unfortunately, many of these handover algorithms have only been evaluated by simulations. They do not take the wide range of mobile devices with varying system parameters into account. For the practical deployment, handover algorithms are required that adapt to various device parameters and network characteristics. In this paper we present a fuzzy-based vertical handover decision algorithm which adjusts itself to the given device and network capabilities. Starting with a discussion of handover requirements we present the algorithm and describe how it is activated in the handover process. Finally we present several experiments which evaluate the accuracy of the handover decision, the quality of service guarantees for the application, and the resource consumption.}, language = {en} } @inproceedings{PinkPietschKoenig, author = {Pink, Mario and Pietsch, Thomas and K{\"o}nig, Hartmut}, title = {An adaptive Handover decision algorithm for heterogeneous wireless networks}, series = {Mobile Wireless Middleware, Operating Systems, and Applications, 5th International Conference, Mobilware 2012, Berlin, Germany, November 13-14, 2012}, booktitle = {Mobile Wireless Middleware, Operating Systems, and Applications, 5th International Conference, Mobilware 2012, Berlin, Germany, November 13-14, 2012}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-642-36659-8}, pages = {136 -- 149}, language = {en} } @inproceedings{SchusterPaulKoenig, author = {Schuster, Franka and Paul, Andreas and K{\"o}nig, Hartmut}, title = {A Distributed Intrusion Detection System for Industrial Automation Networks}, series = {Proceedings of the 17th International Conference on Emerging Technologies \& Factory Automation, Krakau, Polen, September 2012}, booktitle = {Proceedings of the 17th International Conference on Emerging Technologies \& Factory Automation, Krakau, Polen, September 2012}, publisher = {IEEE}, isbn = {978-1-4673-4736-5}, doi = {10.1109/ETFA.2012.6489703}, pages = {1 -- 4}, abstract = {Modern automation is measured in terms of interoperability and easy administration. Introducing technology focussing on these criteria, however, induce new security risks to existing and future automation installations. Current security approaches in automation do not keep pace with the rising security challenges. Prevalent in automation is the use of access control to protect the system from malicious activity, such as extern attacks. Means to inspect the automation traffic to identify attacks that already have overcome access control or are initiated from inside the automation system are not available, yet. For filling this gap, we investigate in the application of intrusion detection techniques on industrial automation. In this paper, we present the current state of an intrusion detection system tailored to the analysis of operation down to traffic between automation devices on field layer.}, language = {en} } @inproceedings{KaliappanKoenig, author = {Kaliappan, Prabhu Shankar and K{\"o}nig, Hartmut}, title = {On the Formalization of UML Activities for Component-Based Protocol Design Specifications}, series = {Theory and practice of computer science, SOFSEM 2012, 38th Conference on Current Trends in Theory and Practice of Computer Science, Špindlerův Ml{\´y}n, Czech Republic, January 21 - 27, 2012}, booktitle = {Theory and practice of computer science, SOFSEM 2012, 38th Conference on Current Trends in Theory and Practice of Computer Science, Špindlerův Ml{\´y}n, Czech Republic, January 21 - 27, 2012}, editor = {Katzenbeisser, Stefan}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {978-3-642-27659-0}, pages = {479 -- 491}, abstract = {This book constitutes the refereed proceedings of the 38th Conference on Current Trends in Theory and Practice of Computer Science, SOFSEM 2012, held in Špindlerův Ml{\´y}n, Czech Republic, in January 2012. The 43 revised papers presented in this volume were carefully reviewed and selected from 121 submissions. The book also contains 11 invited talks, 10 of which are in full-paper length. The contributions are organized in topical sections named: foundations of computer science; software and Web engineering; cryptography, security, and verification; and artificial intelligence.}, language = {en} } @book{Koenig, author = {K{\"o}nig, Hartmut}, title = {Protocol Engineering}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {978-3-642-29144-9}, pages = {XV, 525}, language = {en} }