On Tue, 14 Nov 2017 21:17:02 -0800, in
, Jeff Liebermann wrote:

The problem is that I don't trust software solutions to fix a problem
caused by an operating system or application that has gone insane. The
reset has to be done by something that won't be trashed, hung, or
become too busy, which means an external device or independent
"heartbeat" timer.

Klugey approach?

Set a WatchDog Timer reboot.

Specify an IP that won't respond to pings, set up the WatchDog timer to
ping it every 24*60*60 seconds, with a fail count of 7. (or suitable
numbers that the GUI will accept).