This stops "application" attacks that try to crash your web server (like the Apache or Nginx service).
The cost of doing nothing is a weekend of downtime and lost customers. Implement the free measures above immediately, sleep securely, and scale your protection as your revenue scales. free anti ddos
If your origin IP is exposed (e.g., server.yourdomain.com ), attackers will bypass Cloudflare. Configure your web server firewall (using UFW or CSF) to . This stops "application" attacks that try to crash
Cloudflare acts as a reverse proxy. Your traffic passes through their global network, which filters out malicious requests before they ever reach your server. free anti ddos