Automated validation
Every objective is checked against your live machine in seconds. No guessing, no waiting for a mentor — just clear pass / fail feedback.
Browse the labs →Spin up real Linux, Docker, Kubernetes and security labs in your browser. Every task is auto-verified, every machine is isolated — so you build real skill, fast.
student@lab:~$ docker build -t myapp .
✔ Successfully built & tagged myapp:latest
student@lab:~$ docker run -d -p 8080:80 myapp
✔ Container running · objective verified +50 XP
student@lab:~$ kubectl get pods
web-app-7d9f 1/1 Running 0 2m
student@lab:~$
Machine
1 node · Ubuntu 24.04
Resources
2 vCPU · 4 GB RAM
Access
Terminal + Web app
Three things make hands-on learning actually stick — and they're in every single lab.
Every objective is checked against your live machine in seconds. No guessing, no waiting for a mentor — just clear pass / fail feedback.
Browse the labs →Your own dedicated machine on an isolated network segment, with full sudo. Break things safely — that's where the learning happens.
Try the sandbox →No installs, no SSH keys, no local config. Open a tab and you're at a real terminal in about two minutes, from any device.
Start free →Files, permissions, processes and pipes. The terminal, finally friendly.
Images, networking, volumes and Compose — the complete container workflow.
Pods, services and deployments on a real cluster — not a simulation.
Threat models, hardening and safe defaults across Linux systems.
DNS, routing, ports and tcpdump on isolated multi-node networks.
Terraform, pipelines and automation against sandbox infrastructure.
Filter by domain, level and duration. Each lab shows objectives, machine specs and credit cost upfront — no surprises.
A fresh, isolated VM spins up in your chosen region. Your browser terminal connects automatically.
Work through real objectives. Tasks verify instantly, XP and achievements land on your profile as you go.
Hierarchy
One primary action per screen. Headlines, KPIs and CTAs are sized so your eye always knows where to go first.
Consistency
Same cards, pills, spacing and colours everywhere — learn the interface once, use it everywhere.
Visibility & feedback
Running sessions, timers, progress rings and toasts always show system status. Nothing happens silently.
Control & freedom
Terminate, reset or leave any lab at any time. Filters are reversible and search is always one ⌘K away.
An open-ended Ubuntu playground: a dedicated VM with full sudo, browser terminal access and on-demand web exposure. No scored tasks — explore freely.
Multi-lesson bootcamps where every lesson drops you into a live machine — not a quiz.
From first login to confident shell scripting, one live machine at a time.
View course catalog CONTAINERSImages, networking, volumes and Compose — the complete container workflow.
View course catalog CERTIFICATEThreat models, hardening and safe defaults across Linux systems.
View course catalogLaunch the free sandbox now — no setup, no credit card. Just a real terminal and room to experiment.
▶ Launch free lab — ~2 minutes