Transport Layer Security (TLS) protocol
- TLS is a cryptographic protocol used to create a secure encrypted connection between two end devices or applications.
- It uses asymmetrical cryptography to authenticate end points, and then negotiate a symmetrical security key, which is used to encrypt the session
- TLS has largely replaced the Secure Socket Layer protocol.
- It works at Layer 5 and above of the OSI model.
- The most common use is in creating a secure encrypted Internet session (SSL VPN).
- All modern Web browsers support TLS.
Secure Socket Layer (SSL) protocol
- SSL is an older cryptographic protocol that is very similar to TLS
- The most common use is in Internet transactions
- All modern Web browsers support SSL
- Due to issues with earlier versions of the protocol, it has largely been replaced by TLS protocol
- SSL v.3.3 has been developed to address the weaknesses of the earlier versions
