# Install sshd
sudo apt install ssh -y
sudo systemctl enable --now ssh
# Configure firewall to allow ssh
sudo ufw allow ssh
# Check firewall
ufw status verbose
# sudo ufw delete allow ssh # disallow ssh through firewall
# Configure ssh to enable root login - please make sure that root has a password
sudo sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
# Set gracetime
sudo sed -i 's/#LoginGraceTime 2m/LoginGraceTime 2m/' /etc/ssh/sshd_config
# restart sshd
sudo systemctl restart sshd
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