Cloudflare und CDN3 Min. Lesezeit
Configuring Cloudflare SSL modes
Understand Flexible, Full, and Full (Strict) SSL modes and which to use.
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Cloudflare SSL modes
Cloudflare offers several SSL modes that control how traffic is encrypted between your visitors, Cloudflare, and your server.
SSL modes explained
- Off — No SSL. Not recommended.
- Flexible — HTTPS between visitor and Cloudflare only. HTTP between Cloudflare and your server. Avoid this if possible.
- Full — HTTPS everywhere, but doesn't verify your server's certificate. Fine for self-signed certs.
- Full (Strict) — HTTPS everywhere with a valid certificate. Most secure. Recommended.
Recommended setting
Use Full (Strict). This requires a valid SSL certificate on your server. Our Let's Encrypt certificates (installed via Plesk) are fully trusted by Cloudflare.
Fixing redirect loops
If your site shows a redirect loop (ERR_TOO_MANY_REDIRECTS), the SSL mode is likely wrong. Switch from Flexible to Full or Full (Strict) in Cloudflare → SSL/TLS.
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