SharkFest'26 Europe

How to find problems quickly in a trace file (and win the packet challenge)
2026-11-05 , Room 1
Language: English

This beginner-friendly presentation introduces you to basic Wireshark techniques to find problems quickly. This includes lesser known Wireshark features, that are super-helpful in daily network analysis.

The session also covers the team work approach to network analysis: How to coordinate the team members work and keep track of results.


Returning Sharkfest attendees know, that the packet challenge is a team effort. This year, you need to regain control of a [redacted]. To complete the mission, the team has to apply elementary network forensics skills to extract data from a trace file.
The challenge is build so that (hopefully) every team can solve it. This session gives you the tools to complete the challenge first and take home the price.

For over 20 years, Eddi has been looking at network protocols to find (or rule out) network problems, vulnerabilities, ongoing hacking attacks or just for fun.

Working for the Swiss train company BLS as IT security analyst, he is reviewing the configuration of a multitude of systems to improve the overall security of the domain. Wireshark is one of the tools to verify the outcome of a configuration change.

Shameless promotion: Visit https://www.bls.ch/en/freizeit-und-ferien/ausflug to find some of the best destinations in Switzerland.

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