Jens Helge Reelfs

Sometimes,
it is making others understand the big picture.

Teaching

Courses · Lectures · Seminars · Labs

Computer Networks (BTU)

As Teaching Assistant

• Mini Internet Platform slides (DE)
  Used within our Summer 2022, 2021 and 2020 lectures.
  

  • Multi-tenant docker environment
  • Configure and run own networks and ASes
  • Manage AS interconnections - direct peering & IXPs
  • Interpret observed BGP looking glass and netflow information

  Originally created by the Networked Systems Group from ETHZ, code available on GitHub
• Internet Measurements and Forensics exercise
  Info & BTU Module · Summer 2022, Summer 2021 Summer 2020

  • Measurement Use-Case: DNS and Security
  • Measuring the Internet
  • Internet control plane analysis and robustness
  • Reachability and Security
  • Security infrastructure & network forensics
  • 2021 Internet Asynchronous Path & Latency Measurement Project with DACS Group, UTwente lab
  • since 2021 How to read a paper? - Writing a Public Media Article about Measurement Research mini-seminar

• Internet - Functionality, Protocols, Applications exercise
  Info & BTU Module · Summer 2020

  • Internet economics
  • Internet protocol stack (IPv4, CIDR, IPv6, DHCP, BGP, TCP, UDP, DNS, HTTP)
  • Quality of Service (types, mechanisms, Intserv, Diffserv)
  • Fundamentals of multimedia communication
  • Datacenter networking
  • Content distribution networks

• Introduction to Computer Networks Networking Basics exerxice lab
Info & BTU Module (DE) · Winter 2019

• Building Communication Protocols python, C++
• Sequencing, Buffering
• Reliable/Unreliable Transport

• Introductory Seminar: Trends in Communication Systems seminar
  Info & BTU Module (DE) · Winter 2021, Winter 2020, Winter 2019

  • Various topics in Internet, Computer Networking
  • Learning how to disseminate scientific work
  • Compile a scientific summary of given topic

· Projects · Publications · Teaching Supervision ·

Communciation & Distributed Systems (RWTH)

As Teaching Assistant

• Advanced Internet Technology exercise
  Info & RWTH Module · Winter 2019, Winter 2015

  • Peer-to-Peer networks: unstructured P2P systems, general network topologies, structured P2P systems, P2P applications
  • Cloud computing: cloud and distributed data storage
  • Software-Defined Networking (SDN)
  • Security: Blockchain, TLS
  • (Wireless) Sensor networks, The Internet of Things (IoT)

• Network Architectures and Performance lecture* exercise
  Info, RWTH Module · Summer 2018, Summer 2017

  • Core Internet and critical services
  • Transport & Datacenter Transport
  • Internet Measurements

• Datenkommunikation und Sicherheit Networking Basics exercise
  Info, RWTH Module · Summer 2017

  • Communication services, layer models, protocols
  • Physical basics of transmission, Error handling and medium access
  • Internet Protocol (IP) and Routing: Connecting remote hosts
  • Transmission Control Protocol (TCP): Connecting applications
  • Security: Cryptographic primitives, IPsec, SSL/TLS

• Communication Systems Lab lecture lab
  Info, RWTH Module · Winter 2016

  • Network programming & analysis on Linux
  • Programming on Android
  • Arduino devices and sensors

• (Pro-)Seminars on Advanced and Mobile Internet Technology seminar
  Info, RWTH Module · Summer / Winter · 2015 - 2019

  • How to do a literature survey?
  • How to write scientific papers? Which conventions to follow, how to e.g. cite literature?
  • How to give a good presentation?

· Projects · Publications · Teaching Supervision ·