SharkFest'25 EUROPE

SMB Masterclass - Outtakes and Lessons Learned
2025-11-06 , Room B

The SMB masterclass (available as pre-conference training) throws students into the network of a fictitious company. With the limited time of a one-day class, I had prepared few use cases that did not make it into the class. Here is an extra hour of SMB analysis.


The lab environment for the class includes a Windows domain, multiple servers, workstations and applications. The applications were custom-build for this class to show odd behavior from real-world scenarios.
This presentation will show, how to go from a user experience ("it's slow"), get around the usual blame ("it's the network") and then identify the root cause.

pcapincluded

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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