The first thing to do after creating a VPS is to secure SSH access.
Use SSH keys
ssh-keygen -t ed25519
ssh-copy-id user@serverDisable password login
sudo nano /etc/ssh/sshd_config
# PasswordAuthentication no
sudo systemctl restart sshDanger
Do not close your current session until key login works from a new session.
Firewall
sudo ufw allow OpenSSH
sudo ufw enable
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