Has anyone ever used SME Sever? http://wiki.contribs.org? Looks similar to NethServer, not as up to date of an interface it appears but I have used it at locations and it works well. It is based on CentOS.
I just don't understand WHY you'd need a connected vending machine.
Credit Card transactions.
Wouldn't a dial-up connection that dumps transactions once a day be sufficient?
Maybe, but they're probably doing fraud checks on each swipe.
True... and all the more reason for them to be secured better.
The CC transaction connection is a likely a self contained bit like your stand alone reader at a mom and pop restaurant. Those are manually connected to a service on initial setup and then they just go on their merry way with their own secure tunnel.
Snipe-IT would be the best option and yes import works without any issues. I recently setup Snipe-IT and imported our age old excel sheet inventory ( need to work on the formatting a bit to match Snipe-IT format, and for that all i did was to just create one asset and exported that to csv) But if you get the chance, i would say take time and build your database just for the major models, machine types and location and that will help you on the long run.