Transport Layer Security (TLS) aims to ensure data security and confidentiality during the communication process between two applications. Currently, there are four versions of the TLS protocol: TLS1.0/1.1/1.2/1.3. Lower versions have better compatibility but lower security; higher versions have higher security but weaker compatibility.
TLS Protocol Version
Supported Mainstream Browsers
TLS 1.0
IE6+
Chrome 1+
Firefox 2+
TLS 1.1
IE 11+
Chrome 22+
Firefox 24+
ME 12+
Safari 7+
Opera 12.1+
TLS 1.2
IE 11+
Chrome 30+
ME 12+
Firefox 27+
Safari 7+
Opera 16+
TLS 1.3
Chrome 70+
Firefox 63+
ME 79+
Safari 14+
Opera 57+
Feature Introduction
Tencent Cloud CDN enables TLS 1.0/1.1/1.2 and disables TLS 1.3 by default. You can enable and disable specified TLS versions as needed.
Note
Note: Make sure the HTTPS certificate is properly configured before configuration.
Configuration Guide
View Configuration
Log in to the CDN console, select Domain Management from the left sidebar menu, click Management in the domain operation column to enter the domain configuration page, switch the tab to HTTPS Configuration, and you will find the TLS Version Configuration.
By default, TLS 1.0/1.1/1.2 are in enable status, and TLS 1.3 is in closed status:
Modify
You can close/enable specified TLS versions as needed, click Modify:
Configuration limitations
You can enable a single version or multiple consecutive ones. For example, you can enable version 1.0, 1.1 and 1.2, but not version 1.0 and 1.2.
