Apple will randomize your MAC when connecting to networks to maintain privacy. It’s a per-network setting that can be toggled off for your own private network if you want to.

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Why is port 22 open? Is this on your router as well or just the server?

This is SSH, which you should pretty much never have open (to the internet! Local is fine) MC is by default 25565. You will have every bot on the internet probing that port.

You’re saying that data centers are replacing batteries constantly…just imagine the labor costs on that (and the down time), not even considering the material cost.

I’m the tech doing the battery replacements. The big boy UPSes are typically a 3-5 year replacement cycle. Something like this:

(I just picked the last one on my phone so not a great picture, they’re about the size of a small refrigerator)

On rack mount and desktop style UPSes 18-36 months isn’t unreasonable. Some of the smaller UPSes, like APC 750s, go through batteries even faster. My personal theory is that they just get and stay too hot.

There is typically zero downtime while servicing any of them, every critical system has redundant power supply and battery replacements usually don’t interrupt power output anyway. It would take multiple failures to cause any sort of significant downtime, and if it would, we just do them during scheduled downtime.

You absolutely can, it’s just not easy.

They’ll have to get a new SAS controller unless the RAID controller has an HBA mode. Running ZFS under a RAID controller is the best way to lose all of your data.

ZFS is wonderful but it takes quite a bit of planning and specialized knowledge to implement properly. Your fear of a failed RAID controller is a bit much, too. I’ve had to deal with a single controller failure in 30 years of IT (and I’ve done warranty work for all of the major OEMs in corporate IT for most of those 30 years)

That’s a security feature the owner sets. Your beef is with the website trying to improve their security and the malicious actors that warrant that, cloudflare just provides the tools.

From a privacy standpoint, cloudflare dns protects your sites very well. They will proxy requests so you don’t have to reveal your IPs, and provide a lot of security tools for free. Even without registering your domain there its a great option for DNS.

NextDNS is also a DNS server. It is a much more robust service but it is not self-hosted.

I use it because it’s insanely easy to use and isn’t limited to my own network. For internal DNS I use PowerDNS with NextDNS upstream. Since I have 6 users and 4 servers (3 of which are VM hosts) I pay for it, but most home users would never need to.

Check it out, NextDNS.io

If I had a store that sold everything in the world two blocks away, I wouldn’t need Amazon, that’s an excellent point. Unfortunately, in the real world, there’s just a 7-11 with a big yellow box in front.