Alienstech

         sudo ufw allow 22/tcp (if you're using the standard ssh port) sudo ufw allow 80/tcp (if you're using standard http) sudo ufw enable yes ...

         sudo nano -w /etc/ssh/sshd_config change port from 22 to whatever root access from yes to no crtl+x yes enter sudo service sshd restart     

adduser "username" (no quotes)

sudo gpasswd -a username sudo

sudo dpkg-reconfigure tzdata

     sudo apt-get update sudo apt-get install ntp yes service ntp status     

sudo nano /etc/netplan/00-installer-config.yaml Copy and paste (or type) the following then, edit it where needed. The spaces/indentions, version numb...

SSH into the OS or use Terminal Type date (time will be displayed as 17:30 Type sudo at 18:00 (this schedules the next command to run in 30 min from 17:3...

Ubuntu sudo dpkg-reconfigure --priority=low unattended-upgrades Raspian Update the package list, update all packages and remove any packages that are no ...

Add rules to the firewall and enable it sudo ufw allow 22/tcp sudo ufw allow 8080/tcp sudo ufw allow 8443/tcp sudo ufw allow 8880/tcp sudo ufw allow 8...