234 citations · 1k across the 47 of their papers we have counts for
49 papers
Deconstructing BLE Multi-hop: a Model-based Approach to Quantifying the Challenges
Bozheng Pang, José Alamos, Thomas C. Schmidt +1
Bluetooth Low Energy (BLE) was originally designed for point-to-point communication, but BLE multi-hop networks have attracted academic and industrial interest. Multi-hop communica…
A Leaner and Faster Web: How CBOR Can Improve Dynamic Content Encoding in JSON and DNS over HTTPS
Martine S. Lenders, Carsten Bormann, Thomas C. Schmidt +1
The Internet community has taken major efforts to decrease latency on the World Wide Web with significant improvements in accelerating content transport and in compressing static c…
Scanning the IPv6 Internet Using Subnet-Router Anycast Probing
Maynard Koch, Raphael Hiesgen, Marcin Nawrocki +2
Identifying active IPv6 addresses is challenging. Various methods emerged to master the measurement challenge in this huge address space, including hitlists, new probing techniques…
Do CAA, CT, and DANE Interlink in Certificate Deployments? A Web PKI Measurement Study
Pouyan Fotouhi Tehrani, Raphael Hiesgen, Teresa Lübeck +2
Integrity and trust on the web build on X.509 certificates. Misuse or misissuance of these certificates threaten the Web PKI security model, which led to the development of several…
Understanding IoT Domain Names: Analysis and Classification Using Machine Learning
Ibrahim Ayoub, Martine S. Lenders, Benoît Ampeau +4
In this paper, we investigate the domain names of servers on the Internet that are accessed by IoT devices performing machine-to-machine communications. Using machine learning, we…
From Files to Streams: Revisiting Web History and Exploring Potentials for Future Prospects
Lucas Vogel, Thomas Springer, Matthias Wählisch
Over the last 30 years, the World Wide Web has changed significantly. In this paper, we argue that common practices to prepare web pages for delivery conflict with many efforts to…
How to Measure TLS, X.509 Certificates, and Web PKI: A Tutorial and Brief Survey
Pouyan Fotouhi Tehrani, Eric Osterweil, Thomas C. Schmidt +1
Transport Layer Security (TLS) is the base for many Internet applications and services to achieve end-to-end security. In this paper, we provide guidance on how to measure TLS depl…
6LoRa: Full Stack IPv6 Networking with DSME-LoRa on Low Power IoT Nodes
José Álamos, Thomas Schmidt, Matthias Waehlisch
Long range wireless transmission techniques such as LoRa are preferential candidates for a substantial class of IoT applications, as they avoid the complexity of multi-hop wireless…
SoK: A Data-driven View on Methods to Detect Reflective Amplification DDoS Attacks Using Honeypots
Marcin Nawrocki, John Kristoff, Raphael Hiesgen +3
In this paper, we revisit the use of honeypots for detecting reflective amplification attacks. These measurement tools require careful design of both data collection and data analy…
PUF for the Commons: Enhancing Embedded Security on the OS Level
Peter Kietzmann, Thomas C. Schmidt, Matthias Wählisch
Security is essential for the Internet of Things (IoT). Cryptographic operations for authentication and encryption commonly rely on random input of high entropy and secure, tamper-…
A Review of Techniques for Ageing Detection and Monitoring on Embedded Systems
Leandro Lanzieri, Gianluca Martino, Goerschwin Fey +3
Embedded digital devices are progressively deployed in dependable or safety-critical systems. These devices undergo significant hardware ageing, particularly in harsh environments.…
On the Interplay between TLS Certificates and QUIC Performance
Marcin Nawrocki, Pouyan Fotouhi Tehrani, Raphael Hiesgen +3
In this paper, we revisit the performance of the QUIC connection setup and relate the design choices for fast and secure connections to common Web deployments. We analyze over 1M W…
Delay-Tolerant ICN and Its Application to LoRa
Peter Kietzmann, Jose Alamos, Dirk Kutscher +2
Connecting long-range wireless networks to the Internet imposes challenges due to vastly longer round-trip-times (RTTs). In this paper, we present an ICN protocol framework that en…
Waiting for QUIC: Passive Measurements to Understand QUIC Deployments
Jonas Mücke, Marcin Nawrocki, Raphael Hiesgen +6
QUIC experiences a rapid adoption since its standardization in 2021, and hypergiants configure their infrastructure to optimize for QUIC performance. In this paper, we introduce a…
Usable Security for an IoT OS: Integrating the Zoo of Embedded Crypto Components Below a Common API
Lena Boeckmann, Peter Kietzmann, Leandro Lanzieri +2
IoT devices differ widely in crypto-supporting hardware, ranging from no hardware support to powerful accelerators supporting numerous of operations including protected key storage…
Securing name resolution in the IoT: DNS over CoAP
Martine S. Lenders, Christian Amsüss, Cenk Gündogan +3
In this paper, we present the design, implementation, and analysis of DNS over CoAP (DoC), a new proposal for secure and privacy-friendly name resolution of constrained IoT devices…
The Race to the Vulnerable: Measuring the Log4j Shell Incident
Raphael Hiesgen, Marcin Nawrocki, Thomas C. Schmidt +1
The critical remote-code-execution (RCE) Log4Shell is a severe vulnerability that was disclosed to the public on December 10, 2021. It exploits a bug in the wide-spread Log4j libra…
DSME-LoRa: Seamless Long Range Communication Between Arbitrary Nodes in the Constrained IoT
José Álamos, Peter Kietzmann, Thomas Schmidt +1
Long range radio communication is preferred in many IoT deployments as it avoids the complexity of multi-hop wireless networks. LoRa is a popular, energy-efficient wireless modulat…
Long-Range ICN for the IoT: Exploring a LoRa System Design
Peter Kietzmann, Jose Alamos, Dirk Kutscher +2
This paper presents LoRa-ICN, a comprehensive IoT networking system based on a common long-range communication layer (LoRa) combined with Information-Centric Networking (ICN) princ…
Secure and Authorized Client-to-Client Communication for LwM2M
Leandro Lanzieri, Peter Kietzmann, Thomas C. Schmidt +1
Constrained devices on the Internet of Things (IoT) continuously produce and consume data. LwM2M manages millions of these devices in a server-centric architecture, which challenge…
WIP: Exploring DSME MAC for LoRa -- A System Integration and First Evaluation
José Álamos, Peter Kietzmann, Thomas C. Schmidt +1
LoRa is a popular wireless technology that enables low-throughput (bytes) long-range communication (km) at low energy consumption (mW). Its transmission, though, is on one side pro…
Transparent Forwarders: An Unnoticed Component of the Open DNS Infrastructure
Marcin Nawrocki, Maynard Koch, Thomas C. Schmidt +1
In this paper, we revisit the open DNS (ODNS) infrastructure and, for the first time, systematically measure and analyze transparent forwarders, DNS components that transparently r…
The Far Side of DNS Amplification: Tracing the DDoS Attack Ecosystem from the Internet Core
Marcin Nawrocki, Mattijs Jonker, Thomas C. Schmidt +1
In this paper, we shed new light on the DNS amplification ecosystem, by studying complementary data sources, bolstered by orthogonal methodologies. First, we introduce a passive at…
From the Beginning: Key Transitions in the First 15 Years of DNSSEC
Eric Osterweil, Pouyan Fotouhi Tehrani, Thomas C. Schmidt +1
When the global rollout of the DNS Security Extensions (DNSSEC) began in 2005, a first-of-its-kind trial started: The complexity of a core Internet protocol was magnified in favor…