Global INternet Observatory.


Internet measurements have long been a research priority at our chair. These measurements help us better understand the Internet and its security.

GINO is a research group for exchanging ongoing research, concepts, and ideas in the Internet measurement domain. Researchers and students meet once every month to discuss current topics, advancements, tools, and best practices in measurements.

Internet-wide scans

We conduct various regular and ad-hoc Internet-wide scans for protocols such as HTTPS, DNS, and BACnet. These are purely scientific and we never attempt to intrude into any system. We follow best practices laid out by the scientific community such as by Dittrich et al. 1, and Partridge and Allman 2.
If you are affected by these, e.g., because of IDS alerts, please contact us and we will be happy to blacklist you immediately. The involved machines are:

Host IPv6 address IPv4 address 2001:4ca0:108:42::X 138.246.253.X
dallas 2600:3c00::f03c:91ff:fe3b:d2d
singapore 2400:8901::f03c:91ff:fe3b:d08

IPv6 Hitlist

We provide a daily updated IPv6 hitlist which can be downloaded by interested researchers. Find more information on our dedicated IPv6 hitlist page.

Monthly GINO meeting

We meet every month for about one hour. The audience of the monthly meetings are:

  • Interested researchers from the chair
  • Interested researchers from other chairs
  • Students currently doing a thesis or project in the area of Internet-wide measurements
  • Students who are interested in doing a thesis in the Internet-measurement domain

Next meeting

  • Next meeting: April 2017 in 03.05.033


If this sounds interesting to you, feel free to contact us:


  1. D. Dittrich, E. Kenneally et al., “The Menlo Report: Ethical Principles Guiding Information and Communication Technology Resewarch,” US Department of Homeland Security, 2012.

  2. C. Partridge and M. Allman, “Ethical Considerations in Network Measurement Papers,” Communications of the ACM, 2016.

Related publications

2017.05 Oliver Gasser, Quirin Scheitle, Carl Denis, Nadja Schricker, Georg Carle, “Security Implications of Publicly Reachable Building Automation Systems,” in Proc. 2nd Int. Workshop on Traffic Measurements for Cybersecurity, San Jose, CA, USA, May 2017. [Pdf] [Bib]
2017.02 Oliver Gasser, Quirin Scheitle, Carl Denis, Nadja Schricker, Georg Carle, “Öffentlich erreichbare Gebäudeautomatisierung: Amplification-Anfälligkeit von BACnet und Deployment-Analyse im Internet und DFN,” in 24. DFN-Konferenz Sicherheit in vernetzten Systemen, Hamburg, Germany, Feb. 2017. [Pdf] [Bib]
2016.04 Oliver Gasser, Quirin Scheitle, Sebastian Gebhard, Georg Carle, “Scanning the IPv6 Internet: Towards a Comprehensive Hitlist,” in Proc. 8th Int. Workshop on Traffic Monitoring and Analysis, Louvain-la-Neuve, Belgium, Apr. 2016. [Url] [Pdf] [Slides] [Bib]
2016.03 Quirin Scheitle, Matthias Wachs, Johannes Zirngibl, Georg Carle, “Analyzing Locality of Mobile Messaging Traffic using the MATAdOR Framework,” in Passive and Active Measurements Conference (PAM) 2016 , Heraklion, Greece, Mar. 2016. [Pdf] [Preprint] [Slides] [Homepage] [DOI] [Bib]

Finished student theses

Author Title Type Advisors Links
Patrick Sattler Parsing geographical locations from DNS names GR Quirin Scheitle, Oliver Gasser
Pirmin Blanz IPv6 TLS Security Scanning MA Oliver Gasser, Quirin Scheitle

Open and running student theses

Author Title Type Advisors Links
Florens Werner Finding Active IPv6 Addresses BA Quirin Scheitle, Oliver Gasser Pdf
Markus Sosnowski Internet-Wide Assessment of TCP Options BA Quirin Scheitle, Oliver Gasser, Minoo Rouhi, Paul Emmerich, Dominik Scholz Pdf
Max Helm Evaluating TLS Certificate Transparency Logs using Active Scans IDP Oliver Gasser, Benjamin Hof Pdf
Alexander Schulz Identification of IPv6-IPv4 Sibling Pairs from Passive Observations BA Quirin Scheitle, Oliver Gasser, Minoo Rouhi
Jan-Philipp Lauinger Evaluating Client Discrimination in Anonymization Networks Using Active Network Scans Forschungspraxis Oliver Gasser, Sree Harsha Totakura Pdf
Hendrik Eichner Revisiting SSH Security in the IPv4 and IPv6 Internet BA Oliver Gasser Pdf
Maximilian Pudelko Payload Extraction for Flows with Anomalous TTL Behaviour IDP Quirin Scheitle, Oliver Gasser, Paul Emmerich Pdf
Karol Babioch TLS Man-in-the-Middle Detection by Means of Passive Monitoring MA Oliver Gasser, Minoo Rouhi, Quirin Scheitle
Thomas Bachmaier Scanning for TCP SYN Proxy Implementations BA Dominik Scholz, Paul Emmerich, Quirin Scheitle, Minoo Rouhi Pdf
Samy Deib Detecting IPv6-IPv4 Sibling Pairs Based on few Data Points BA Quirin Scheitle, Oliver Gasser, Minoo Rouhi Pdf
Michael Köpferl Evaluation of amplification attacks in large-scale networks to improve detection performance IDP Oliver Gasser, Stefan Metzger
Johannes Fischer Browser-based Internet connection testing MA Florian Wohlfart, Oliver Gasser Pdf
Frank Schmidt Large Scale DNS Scanner in Go MA Johannes Naab, Oliver Gasser Pdf
Jonas Heintzenberg Browser-based Internet connection testing BA Florian Wohlfart, Oliver Gasser Pdf
open Continuous Development of Open Source C++ Flow Toolkit HiWi Oliver Gasser Pdf
open Advanced Flow Functions for Traffic Anomaly Detection IDP, MA Oliver Gasser, Johannes Naab Pdf
open Collecting Flow Data at High Rates MA, IDP Oliver Gasser Pdf
Offen Comparing IPv4 and IPv6 Paths in the Internet MA Quirin Scheitle, Oliver Gasser, Minoo Rouhi Vejdani Pdf
open Leveraging extended flow data for botnet detection MA, IDP Oliver Gasser, Johannes Naab Pdf