Why not Linux with SSH open, ready for you to login in case some troubleshooting is needed? OK, I have SSH open on a non-standard port on my homemade NAS, and

Why not Linux with SSH open, ready for you to login in case some troubleshooting is needed? OK, I have SSH open on a non-standard port on my homemade NAS, and I notice the many many visitors from all over the world trying to bust through my SSH door... (I've implemented a web page to open the port when I enter a password there)