Research Seminar on 04.07.2022 16:00
Room video conference

A Cross-Protocol Blockchain Benchmark System

Final talk for Master's Thesis
Andrei Lebedev (Rezabek, Kinkelin)

DroNet ’22: Proceedings of the Eighth Workshop on Micro Aerial Vehicle Networks, Systems, and Applications

Policy-Based Routing for Flying Adhoc Networks

Authors: Florian Wiedner, Jonas Andre, Paulo Mendes, Georg Carle

KuVS Fachgespräch - Würzburg Workshop on Modeling, Analysis and Simulation of Next-Generation Communication Networks 2022 (WueWoWas’22)

Reproducible by Design: Network Experiments with pos

Authors: Sebastian Gallenmüller, Dominik Scholz, Henning Stubbe, Eric Hauser, Georg Carle

Proc. Network Traffic Measurement and Analysis Conference (TMA)

Active TLS Stack Fingerprinting: Characterizing TLS Server Deployments at Scale

Active measurements can be used to collect server characteristics on a large scale. This kind of metadata can help discovering hidden relations and commonalities among server deployments offering new possibilities to cluster and classify them. As an example, identifying a previously-unknown cybercriminal infrastructures can be a valuable source for cyber-threat intelligence. We propose herein an active measurement-based methodology for acquiring Transport Layer Security (TLS) metadata from servers and leverage it for their fingerprinting. Our fingerprints capture the characteristic behavior of the TLS stack primarily caused by the implementation, configuration, and hardware support of the underlying server. Using an empirical optimization strategy that maximizes information gain from every handshake to minimize measurement costs, we generated 10 general-purpose Client Hellos used as scanning probes to create a large database of TLS configurations used for classifying servers. We fingerprinted 28 million servers from the Alexa and Majestic toplists and two Command and Control (C2) blocklists over a period of 30 weeks with weekly snapshots as foundation for two long-term case studies: classification of Content Delivery Network and C2 servers. The proposed methodology shows a precision of more than 99 % and enables a stable identification of new servers over time. This study describes a new opportunity for active measurements to provide valuable insights into the Internet that can be used in security-relevant use cases.

Authors: Markus Sosnowski, Johannes Zirngibl, Patrick Sattler, Georg Carle, Claas Grohnfeldt, Michele Russo, Daniele Sgandurra

Proc. Network Traffic Measurement and Analysis Conference (TMA) 2022

Domain Parking: Largely Present, Rarely Considered!

Authors: Johannes Zirngibl, Steffen Deusch, Patrick Sattler, Juliane Aulbach, Georg Carle, Mattijs Jonker

International Workshop on Traffic Measurements for Cybersecurity 2022

Looking for Honey Once Again: Detecting RDP and SMB Honeypots on the Internet

Authors: Fabian Franzen, Lion Steger, Johannes Zirngibl, Patrick Sattler

2022 IFIP Networking WKSHPS: SLICES Scientific Instruments to support digital infrastructure science (IFIP Networking 2022 WKSHPS SLICES)

Prototyping Prototyping Facilities: Developing and Bootstrapping Testbeds

Authors: Sebastian Gallenmüller, Eric Hauser, Georg Carle

IEEE INFOCOM WKSHPS: Computer and Networking Experimental Research using Testbeds (CNERT 2022) (INFOCOM WKSHPS CNERT 2022)

HVNet: Hardware-Assisted Virtual Networking on a Single Physical Host

Authors: Florian Wiedner, Max Helm, Sebastian Gallenmüller, Georg Carle

Proceedings of the 41st IEEE International Conference on Computer Communications (INFOCOM 2022)

Network Synthesis under Delay Constraints: The Power of Network Calculus Differentiability

Authors: Fabien Geyer, Steffen Bondorf

IEEE/IFIP Network Operations and Management Symposium (NOMS ITAVT Workshop)

SmartNIC-based Load Management and Network Health Monitoring for Time Sensitive Applications

Time sensitive network applications, for example in intra-vehicular networks, aim to give predictable end-to-end latency guarantees. As a consequence, processing resources of involved host systems remain partially unused, because they are reserved for rare worst cases. This circumstance provides the opportunity to reduce dimensioning overheads by managing the load on the nodes flexibly within the network. In our proposed approach, a SmartNIC involving an FPGA-based load balancer achieves dynamic routing of flows whilst preserving end-to-end latency guarantees. A flow-oriented online network measurement component continuously supervises network traffic with regards to compliance to flow specifications and constraints such as bounded one-way delay, absence of packet loss and jitter. We use the supervisor to enhance forwarding decisions on the data plane. Initial evaluation yields a saving potential of around 30 percent. We showcase quick dynamic reconfiguration of the FPGA when triggered by real-time measurement of the one-way delay using realistic automotive network traffic.

Authors: Kilian Holzinger, Franz Biersack, Henning Stubbe, Angela Gonzalez Mariño, Abdoul Kane, Francesc Fons, Zhang Haigang, Thomas Wild, Andreas Herkersdorf, Georg Carle

2022 IEEE/IFIP Network Operations and Management Symposium (NOMS 2022)

Towards the Classification of TCP Throughput Changes

Authors: Simon Bauer, Benedikt Jaeger, Max Reimann, Jonas Fromm, Georg Carle

TMA'22: Best Paper Award

Best Paper Award at TMA 2022

Our publication "Active TLS Stack Fingerprinting: Characterizing TLS Server Deployments at Scale" has been awarded with the Best Paper Award at the Network Traffic Measurement and Analysis Conference (TMA 2022).

The publication is a collaboration with Claas Grohnfeldt, Michele ...

CCNC'20: Best Demo Award

Best Demo Award at CCNC 2020

Our demo of NCSbench has been awarded the Best Demo Award at the IEEE Consumer Communications and Networking Conference (CCNC'20) in Las Vegas, Nevada, USA.

The demo presented NCSbench a platform consisting of a networked control system (NCS) and ...

ANCS'19: Best Paper Award

Best Paper Award at ANCS 2019

Our publication The Case for Writing Network Drivers in High-Level Programming Languages has been awarded with the Best Paper Award at the ACM/IEEE Symposium on Architectures for Networking and Communications Systems (ANCS'19) in Cambridge, United Kingdom.

The publication ...

PAM'19: Best Dataset Award

Best Dataset Award at PAM 2019

The publication "A First Look at QNAME Minimization in the Domain Name System" has been awarded with the Best Dataset Award at the Passive and Active Measurement (PAM) Conference (PAM'19).

The publication is an international collaboration with Wouter B. ...

IMC'18: Community Contribution Award

Community Contribution Award at IMC 2018

The publication "A Long Way to the Top: Significance, Structure, and Stability of Internet Top Lists" has been awarded with the Community Contribution Award at the ACM SIGCOMM Internet Measurement Conference (IMC'18).

The publication is an international collaboration with ...