OpenBSD + VMD + autoinstall
OpenBSD comes with a very simple, very nice hypervisor called vmd(8). This hypervisor is not a full featured as others, but it does a reasonable job of running VMs and makes it really convenient to spin-up a virtual environment for testing configurations. There are other articles on setting up
Enterprise LAN segmentation that works...
If you've been around the enterprise security environment for any length of time, or even if you've just accidentally brushed up against someone who knows someone in the security world, you heard that you must segment everything! Flat networks are bad! Segment, segment, segment!