TLS and SSL - which one should you use?
Your SSL/TLS certificates are used to establish HTTPS connections that can run on all SSL and TLS protocol versions. IETF has already deprecated all SSL protocols, TLS 1.0, and TLS 1.1 - you'll see them marked red if enabled. We recommend using the latest version of TLS to maintain the best performance and security.
If you're using CDN77, it handles all of this for you - deprecates the old versions and enables TLS 1.3, which is the most secure one.