Transport Layer Security (TLS) is a protocol which used to communicate between client and server over internet. This protocol ensures the data integrity, security, privacy and data encryption between the connections. So, the HTTPS requests and responses are communicated securely using this TLS protocol.
Transport Layer Security (TLS) is next generation of SSL protocol. SSL stands for Secure Sockets Layer. TLS is more secured than SSL.
SSL Protocol Versions
- SSL v2.0
- SSL v3.0
Both protocols are deprecated, because of the security vulnerabilities which exists while communicating data using these protocols. Most of the modern browsers are removed the support of SSL protocols, and moved to TLS.
TLS Protocol Versions:
- TLS v1.0
- TLS v1.1
- TLS v1.2
- TLS v1.3 (Experimental)
You can test your website supported protocols using below link by providing the domain name.