You install an operating system and make a machine that is virtual and it runs inside your server. You pass thru hardware to the virtual machine.
If you get infected, it doesn't really hurt your real machine. Like running an OS install inside an OS install.
Don't waste your time. These guys are operating in a territory you don't want to go. You almost don't need anti virus on a server- so just install free ms security essentials and be done.
You'll likely not need it. I never have.
But I don't download or browse on my server.
"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."