Linux ubuntu

initial_setup

nano /etc/ssh/sshd_config # change PermitRootLogin to no and PasswordAuthentication to no
sudo service ssh restart
sudo apt-get update
sudo apt-get install ntp ufw git fail2ban default-jre nodejs
sudo dpkg-reconfigure tzdata
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow 22/tcp
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw enable
sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
sudo nano /etc/fail2ban/jail.conf # add your ip address to the ignore ip line so that you don’t get locked out
sudo service fail2ban restart