Configure the path. Explain the evidence.
Learn Linux networking on real machines. The first chapter covers hosts, routes, forwarding, packet evidence and return-path failures.
8 published lessons across 8 chapters, about 10 hours of work. Every lab runs on a real virtual machine in your browser, and checks your work on the machine itself.
Build and diagnose a routed path across three Linux VMs.
Diagnose one conflicting host route with real lookup and packet evidence.
Use nftables counters and packet captures to find one faulty rule, while preserving the port that must stay blocked.
Test DNS, TCP and HTTP separately to find a wrong DNS record without hiding the problem with a workaround.
Explain why small IPv6 packets work while larger ones fail, then investigate missing Packet Too Big feedback.
Compare baseline, impaired and repaired traffic to explain throughput, delay and loss without overclaiming one measurement.
Find what owns the network configuration, preserve exercise routes across a reboot and verify recovery.
Use evidence to separate two unfamiliar faults, restore the service and show that required restrictions still hold.
Linux networking has 8 published lessons, roughly 10 hours of guided work, spread across 8 chapters.
No. Every lab boots a real virtual machine in your browser, with a real Linux shell. There is nothing to install, and nothing on your own machine to break.
Labs in this track are rated beginner, intermediate. The track starts from the beginning, so no prior experience is assumed.