Sécuriser un VPS

SSH, firewall, mises à jour et bonnes pratiques.

Mises à jour

apt update -y
apt upgrade -y

adduser craftpick
usermod -aG sudo craftpick

mkdir -p ~/.ssh
chmod 700 ~/.ssh
nano ~/.ssh/authorized_keys
chmod 600 ~/.ssh/authorized_keys

apt install -y ufw
ufw allow OpenSSH
ufw enable

nano /etc/ssh/sshd_config

PasswordAuthentication no
PermitRootLogin no

systemctl restart ssh

apt install -y fail2ban
systemctl enable --now fail2ban

ufw status verbose
fail2ban-client status

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