VPS

Amankan VPS dengan UFW + Fail2ban

Firewall default-deny dan proteksi otomatis dari serangan brute force SSH.

Security Firewall SSH

1 Konfigurasi UFW

bash

sudo apt install -y ufw
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow ssh
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw enable

2 Pasang Fail2ban

bash

sudo apt install -y fail2ban
sudo systemctl enable --now fail2ban

Fail2ban otomatis memblokir IP yang gagal login berkali-kali.

3 Cek Status

bash

sudo ufw status verbose
sudo fail2ban-client status sshd