When you want to distribute a ready configured Debian image for those that cannot get something configured by walking through an installation manual, at least make sure it has the unattended-upgrades package installed AND CONFIGURED. It requires a couple more steps after installation, see the Debian wiki.
With this, it will at least remain uptodate within the current Debian version. It installes the security updates, will auto reboot when configured to do that, etc. It will not upgrade to the next version, but an installation manual targeted to a specific Debian install (and for a topic like this) will likely also fail in the next version so has to be updated anyway.
Rob
On 5/18/21 7:38 AM, Ruben ON3RVH via 44Net wrote:
I would not build a Debian image. It will never be updated and will lead to security issues. A good walkthrough with all the commands and some scripts or demo config files is a far better option and a good firewall setting walk-through is also a big plus.