Overview
Get started
Edge certificates
Universal SSL
Enable Universal SSL certificates
Disable Universal SSL certificates
Limitations
Troubleshooting
Advanced certificates
Manage advanced certificates
API commands
Custom certificates
Manage custom certificates
Renewal and expiration
Bundle methodologies
Add CAA records
Remove key file password
Enforce HTTPS connections
Domain Control Validation (DCV)
Methods
Delegated
TXT
Email
HTTP
Troubleshooting
Geo Key Manager
Setup
Supported options
Staging environment (Beta)
Backup certificates
Additional options
Certificate Transparency Monitoring
HTTP Strict Transport Security (HSTS)
Certificate Signing Requests (CSRs)
TLS 1.3
Minimum TLS Version
Automatic HTTPS Rewrites
Total TLS
Enable
Error messages
Always Use HTTPS
Opportunistic Encryption
Client certificates
Create a client certificate
Configure your mobile app or IoT device
Enable mTLS
Revoke a client certificate
Troubleshooting
Keyless SSL
Get started
Cloudflare Tunnel
Public DNS
Hardware security modules
Configuration
AWS cloud HSM
Azure Dedicated HSM
Azure Managed HSM
SoftHSMv2
Entrust nShield Connect
IBM cloud HSM
Google Cloud HSM
Upgrade your key server
Reference
High availability
Scaling and benchmarking
Keyless delegation
Troubleshooting
Mutual authentication
Origin server
Encryption modes
Off (no encryption)
Flexible
Full
Full (strict)
Strict (SSL-Only Origin Pull)
Cipher suites
Origin CA certificates
SSL/TLS Recommender
Authenticated origin pull
About
Setup
Zone-level
Per-hostname
Custom Origin Trust Store
SSL for SaaS
Reference
Cipher suites
Recommendations
Supported cipher suites
Customize cipher suites
Compliance status
Custom certificates
Match on origin
Troubleshooting
TLS protocols
Certificate and hostname priority
Certificate authorities
Browser compatibility
Migration guides
Changes to HTTP DCV
DigiCert update
Universal certificates
Advanced certificates
Custom hostnames
Certificate pinning
Certificate statuses
Validation backoff schedule
Validity periods
Troubleshooting
ERR_SSL_VERSION_OR_CIPHER_MISMATCH
ERR_TOO_MANY_REDIRECTS

Origin server

Learn more about SSL/TLS protection options for your origin servers:

Encryption modes: Encryption modes allow you to control how Cloudflare connects to your origin web server and how certificates presented by your origin are validated.
Cipher suites: Review a list of cipher suites that Cloudflare presents to origins during an SSL/TLS handshake.
Origin CA certificates: Origin Certificate Authority (CA) certificates allow you to encrypt traffic between Cloudflare and your origin web server, and reduce origin bandwidth consumption.
SSL/TLS Recommender: The SSL/TLS Recommender helps you choose which Encryption mode is best for your application.
Authenticated origin pull: Authenticated origin pulls help ensure requests to your origin server come from the Cloudflare network.
Custom Origin Trust Store: Custom Origin Trust Store allows you to upload certificate authorities (CAs) that Cloudflare will use to authenticate connections to your origin server.