SSL Mode Full (Strict) Setting
Learning Focus
By the end of this lesson you will know how to set the SSL mode in Cloudflare's dashboard.
Steps
- Log into Cloudflare Dashboard
- Select your domain
- Navigate to SSL/TLS → Overview
- Select Full (Strict)
- The change takes effect immediately
What Each Mode Does
| Mode | Origin Encryption | Certificate Validated | Production Ready |
|---|---|---|---|
| Off | None | N/A | ❌ |
| Flexible | None | N/A | ❌ |
| Full | Required | Not validated | ⚠️ |
| Full (Strict) | Required | ✅ Validated | ✅ |
warning
Do not enable Full (Strict) until you have a valid certificate installed on your origin server. Doing so will cause 526 errors for all visitors.
Key Takeaways
- Set SSL mode to Full (Strict) only after your origin certificate is installed and working.
- The setting takes effect immediately — test thoroughly.
What's Next
- Continue to Always Use HTTPS for HTTP-to-HTTPS enforcement.