“Erreur chronométrée en attendant la poignée de main DigitalOcean” Réponses codées

Erreur chronométrée en attendant la poignée de main DigitalOcean

First check the set of rules of your default UFW firewall:
sudo ufw status numbered

Now check the default port of your SSH:
grep -i port /etc/ssh/sshd_config

Now if UFW is not allowing SSH port then please add it in UFW rules:
sudo ufw allow ssh_port_number (type your SSH port default number here)

Now restart your SSH:
sudo systemctl start ssh