d's labs
========

browser lab environments, served from a server at home. i build it and i
run it. anyone can sign up. open it at https://labs.dharun.dev

what you can do in it
---------------------

labs          40 one-click environments: kali, ubuntu, jenkins, gitlab,
              airflow, kafka, keycloak, minio, n8n, grafana, jupyter,
              juice shop, dvwa, metasploitable and more. or build your
              own stack.
skills        guided, timed courses. a checker verifies the work inside
              the container. 9 tracks, 6 timed challenges.
ctf           flags, dynamic scoring, first-blood bonuses, hints, teams,
              a scoreboard.
ranges        multi-machine attack scenarios on networks with no
              internet, with an active directory domain controller.

starting a lab, step by step
----------------------------

  1  request accepted     POST /labs/kali/start -> 202 accepted
  2  job queued           a worker picks it up from redis
  3  lab host woken       the student-container vm wakes if asleep
  4  network created      a private docker network per user
  5  container started    capped at 2 cpu and 4 gb, volume attached
  6  login gate ready     GET /labs/kali/ready -> 200 ready

decisions i'd defend
--------------------

admin         the admin console is a separate server. the public api has
              no admin endpoints.
slow work     never blocks a request. the api answers 202 and the worker
              does the rest.
ssh           no lab runs sshd. one gateway docker-execs in as you,
              never as root.
storage       the frontend keeps its access token in memory only.

--
html version: https://dharun.dev/projects/ds-labs
all text pages: https://dharun.dev/txt/   ·   `curl -L dharun.dev`