I've been playing around with Open Appsec, an open source Web Application firewall. Looks pretty neat if combined with nginx proxy manager.

I set up Netbox recently at work to try and improve the abysmal documentation situation. I use an Ansible playbook to provision and set up the server, then copy a docker compose file and start the containers. So far I'm loving Netbox, I just wish my predecessors had documented things from the start.