Institut für Verteilte Systeme
Unser Institut beschäftigt sich mit Themen wie Skalierbarkeit, Zuverlässigkeit, Sicherheit und Datenschutz, Selbstorganisation und Beherrschbarkeit von Komplexität in Verteilten Systemen in einer Vielzahl von Einsatzszenarien wie Cloud-Computing oder Fahrzeug-Fahrzeug-Kommunikation.
In der Lehre decken wir das gesamte Spektrum von Rechnernetzen, über verteilte Systeme bis hin zu Sicherheit und Privacy-Schutz ab.
Unsere letzten Publikationen
A Testing Framework Architecture Concept for Automotive Intrusion Detection Systems
Proceedings of Automotive - Safety and Security 2017
Zusammenfassung: Vehicles are the target of a rising number of hacking attacks. The integration of in-vehicle intrusion detection systems is a common approach to increase the overall system security. However, testing and evaluating these systems is difficult due to the lack of tools to generate realistic benign and malicious workloads as well as sharing these workloads with other researchers. Currently, test- ing tools are predominantly intended for Network Intrusion Detection System (NIDS) in company or industrial networks where their usefulness became apparent. Yet, in the automotive domain, develop- ment of testing tools is still in the early stages. Existing non-commercial automotive tools only focus on one specific bus technology each. However, in-vehicle communication exceeds bus technology boundaries and a testing tool must cover multiple technologies. We propose a framework architec- ture concept for in-vehicle NIDS testing and evaluation to enable the creation of realistic network traffic and attacks in consideration of automotive specific challenges. Our concept provides the op- portunity to share data without additional anonymization effort therefore improving cooperation and reproducibility of testing results.
Evaluating Misbehavior Detection for Vehicular Networks
Proceedings of 5th GI/ITG KuVS Fachgespräch Inter-Vehicle Communication (FG-IVC 2017)
Consistent Retrospective Snapshots in Distributed Event-sourced Systems
Proceedings of the International Conference on Networked Systems 2017
Zusammenfassung: An increasing number of distributed, event-based systems adopt an architectural style called event sourcing, in which entities keep their entire history in an event log. Event sourcing enables data lineage and allows entities to rebuild any previous state. Restoring previous application states is a straightforward task in event-sourced systems with a global and totally ordered event log. However, the extraction of causally consistent snapshots from distributed, individual event logs is rendered non-trivial due to causal relationships between communicating entities. High dynamicity of entities increases the complexity of such reconstructions even more. We present approaches for retrospective and global state extraction of event-sourced applications based on distributed event logs. We provide an overview on historical approaches towards distributed debugging and breakpointing, which are closely related to event log-based state reconstruction. We then introduce and evaluate our approach for non-local state extraction from distributed event logs, which is specifically adapted for dynamic and asynchronous event-sourced systems.
PriCloud: A Distributed File Storage with Financial Incentives
Poster at 1st ForDigital Blockchain Workshop
Security Challenges and Opportunities of Software-Defined NetworkingIEEE Security & Privacy, vol. 15,