What is SNI and how to configure SNI in WHM / cPanel to support multiple SSL certificates hosting on single IP address?
The dedicated IP address is the primary requirement for SSL certificate hosting. This IP address cost is typically being passed down to the end user. Hosting companies may charge $1 or $2 per month for a single dedicated IP address.
SNI (Server Name Indicator) is able to challenge this paradigm and let you host multiple SSL certificates on single IP address. SNI will indicate what hostname you’re connecting to at the start of server and browser handshake. Now you can install own SSL certificate without dedicated IP address on a website hosted on shared IP.
You should have WHM 11.38 or later version to enable SNI feature. Previous versions do not support this SNI feature.