Hi,

I'm Lars,


a novice scientist,
discussion enthusiast,
& cottage cheese lover.

Contact Me
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Recent Activities

Paper Presentation

CoNEXT 2020

I presented our work on the IPv4 address market at CoNEXT'20. Our paper and my short talk are available below in the Publications section.

December 2020

Conference Attendance

IMC 2020

Pedro presented our work on AS Path-Prepending at IMC'20. Our paper and Pedro's 20 min talk are available below in the Publications section.

October 2020

Student Scribe

CoNEXT 2020

I served as a student scribe for the CoNEXT TPC meeting.

September 2020

Conference Attendance

SIGCOMM 2020

August 2020

Conference Attendance

SciPy 2020

July 2020

Conference Attendance

TMA 2020

June 2020

Poster Presentation

PAM 2020

During PAM'20, I presented the poster "2 Years into Quantum-Leaping Route Collector Visibility" covering the benefits and pitfalls of enabling the ADD_PATH extension for some parts of the current Route Collector ecosystem. A video of my presentation is available.

Poster Video
March 2020

Conference Attendance

IMC 2019

October 2019

Shadow PC meeting

IMC 2019

July 2019

Presentation

NetSys 2019

During Netsys'19, I held a "Hot Topic" talk about lower-bounding the incompleteness of different data sources with regards to the Internet's AS topology. A recoding of the talk is made available.

Slides Video
March 2019

Poster Presentation

PAM 2019

During PAM'19, I presented the poster "Patch me if you can: Analyzing the potential of data sources to reveal the Internet's AS topology" covering lower-bounding the incompleteness of different data sources with regards to the Internet's AS topology.

Poster
March 2019

Publications

When Wells Run Dry: The 2020 IPv4 Address Market

L. Prehn, F. Lichtblau, A. Feldmann

Proceedings of the 16th International Conference on emerging Networking EXperiments and Technologies (pp. 46-54), 2020.

PDF Video
CoNEXT'20

AS-Path Prepending: there is no rose without a thorn

P. Marcos, L. Prehn, L. Leal, A. Dainotti, A. Feldmann, M. Barcellos

Proceedings of the ACM Internet Measurement Conference (pp. 506-520), 2020.

PDF Video
IMC'20

Reviewing Experience

Student Scribe

during the virtual PC meeting.

CoNEXT'20

Shadow PC Exercise

with an in-person Shadow PC meeting in London.

IMC'19

Education

Ph.D. Student

Max-Planck-Institut für Informatik

Under the guidance of Anja Feldmann, I'm working on topics related to Interdomain routing and its building blocks. More specifically, my current projects aim at better understanding spoofing detection mechanisms, scrubbing service operations, the possibilities of large peering infrastructures, and the enhancement of the route collector infrastructure.

November 2018 - current

M.Sc. in Computer Science

Technische Universität Berlin

October 2017 - October 2018

B.Sc. in Computer Science

Technische Universität Berlin

October 2014 - March 2018

Teaching

Teaching Assistant

Max-Planck-Institut für Informatik

I currently co-organize Anja Feldmann's seminar "Hot Topics in Data Networks."

Winter Term 2020/21

Teaching Assistant

Max-Planck-Institut für Informatik

I co-organized Anja Feldmann's course "Data Networks."

Summer Term 2020

Student Assistant

Technische Universität Berlin

In Anja Feldmann's course "Network Protocols and Architectures," I assisted the grading for weekly assignments and helped to prepare the exam.

Winter Term 2017/18

Student Assistant

Technische Universität Berlin

In Oliver Brock's course "Algorithms and Data Structures," I presented tutorials to two small groups of less than 40 students every week.

Summer Term 2017

Lab Assistant

Technische Universität Berlin

I co-organized and instructed lab sessions as well as graded the bi-weekly assignments for the lab that accompanies Adam Wolisz's "Network Technologies" lecture.

Winter Term 2016/17

Student Assistant

Technische Universität Berlin

In Oliver Brock's course "Algorithms and Data Structures", I presented tutorials to two small groups of less than 30 students every week.

Summer Term 2016

Get in touch

Max Planck Institute for Informatics
Saarland Informatics Campus
Campus E1 4
66123 Saarbrücken
Germany
lprehn@mpi-inf.mpg.de
+49 172 9159 001
+49 681 9325 3599
INET @ MPII