TLS

Transport Layer Security (TLS) is a cryptographic protocol designed to provide communications security over a computer network, such as the Internet. The protocol is widely used in applications such as email, instant messaging, and voice over IP, but its use in securing HTTPS remains the most publicly visible.¹

TLS vs SSL

TLS is the direct successor to SSL, and all versions of SSL are now deprecated. However, it’s common to find the term SSL describing a TLS connection. In most cases, the terms SSL and SSL/TLS both refer to the TLS protocol and TLS certificates.²

The Case for TLS Everywhere

Cloudflare DNS

• Proxmox Valid SSL With Let's Encrypt and Cloudflare DNS
• Proxmox: ACME DNS API Challenge Plugin

mTLS

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1. Transport Layer Security ↩

2. AWS: What’s the Difference Between SSL and TLS? ↩