Looking for an open-source cyber range solution?
We are building one ; designed for hands-on security training, community-driven, and freely available. Still a work progress but take a look

https://github.com/range42/range42

GitHub - range42/range42: RANGE42 – Main repository and entry point for setup and deployment on your Proxmox nodes

RANGE42 – Main repository and entry point for setup and deployment on your Proxmox nodes - range42/range42

GitHub
@hyd3 you are missing the point of cyberranges, it is for training defenders, not setting up vulnerable hosts for wannabee pentesters. I have used them before and tested a few scenarios, and that is something essential missing which makes it useless for defenders. Right now it is just a VM playground and i know there are such projects already on Githum.
@Ichinin Rest assured, we are on the same page. Scenarios for defenders will be incorporated as well.