https://docs.ovh.com/it/dedicated/mettere-in-sicurezza-un-server-dedicato/
https://arstechnica.com/gadgets/2012/11/how-to-set-up-a-safe-and-secure-web-server/
https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-with-ufw-on-debian-9
https://www.html.it/articoli/ufw-configurare-il-firewall-su-linux/#pid=4
https://upcloud.com/community/tutorials/configure-iptables-debian/
https://www.artera.net/it/blog/software/iptables-configurazione-server-1
Backup strutturato per essere implementato con rclone, valutare la possiblità di generare una ridondanza su host google.
-settare iptable o iwf
-settare mail log
-settare cripto passw rclone
-config cripto assimetrica