1. TLS 1.1

    Version 1.1 of the Transport Layer Security (TLS) protocol.

  2. TLS 1.2

    Version 1.2 of the Transport Layer Security (TLS) protocol. Allows for data/message confidentiality, and message authentication codes for message integrity and as a by-product message authentication.

  3. TLS 1.3

    Version 1.3 (the latest one) of the Transport Layer Security (TLS) protocol. Removes weaker elliptic curves and hash functions.

  4. tls 1.0 (transport security layer)