Subject: Re: Some excitement
"denial of service attack" protection erroneously executing from *my own use* of the server in upgrading the smallest thing, and the server thinking I was attacking it. The server then locked itself to protect,

Ha! I had something similar. I have an always-on raspberrypi that pings my main desktop computer to send out an alarm if the desktop hasn't been on for an entire day. Been working fine forever. A couple of months ago I ditched the third-party firewall on the desktop and replaced it with the Windows Firewall Control. Seems the default is to block all incoming pings, even from the home network.
Oops!

The monitoring program then ran around with its hair on fire, sending out alerts & alarms.

Glad you got it back working.