Is Your Origin IP Leaking Behind Cloudflare? How to Lock Your Server to Cloudflare-Only Traffic
Cloudflare only protects you if attackers can't reach your server directly. Learn the 7 ways an origin IP leaks (DNS history, mail records, unproxied subdomains, certificates, pingbacks), how to check yours, and how to allow only Cloudflare traffic per domain, in OpenPanel, Nginx, ufw and cPanel.