The usual sticking point is not the software. It is that a small business has no spare server to put it on, no idea what to buy, and no wish to find out.
So I build the machine as well. An off-lease HP ProLiant — with Linux and Wazuh already installed, configured and tested before it leaves my workshop. It arrives, it is plugged in, it starts watching.
Banks, brokerages and hospitals do not buy servers, they lease them on three-year cycles and hand them back on schedule — whether or not anything is wrong with them. The hardware is retired by the calendar, not by failure. That is where these machines come from: enterprise equipment that spent three years in a climate-controlled datacentre being looked after properly, now available at a fraction of what it cost new.
A machine of this class sold for around $20,000 new. I know, because installing and supporting HP ProLiant servers was my job for years — I am ProLiant certified and I have had hundreds of them apart. I know which parts fail, which never do, and what to check before one of these leaves my bench. You are getting $20,000 of engineering for $1,800, and somebody who has worked on it since it was new.
None of this is a sales line. Ask, and I will show you the original paperwork — what these machines listed for, and what they were bought and leased under. I kept the records.
Specification is matched to the size of your network — a fifteen-machine office needs considerably less than a hundred-machine one, and I would rather sell you the right size than the biggest.