I created a new hostname in DNS If you’re relying on obscurity Presumably the former caused your new hostname to be published for all of the Internet to see?

I created a new hostname in DNS If you’re relying on obscurity Presumably the former caused your new hostname to be published for all of the Internet to see? That doesn't sound like obscurity to me. I've had a service running on a high port for many years at the same IP. I've seen it get the occasional "knock" from some scanner or bot, but it has been generally quiet. It probably also depends on your IP, as some parts of the Internet are likely scanned far more frequently and aggressively than others.