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What is SSL?

SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are encryption technologies that secure data transfer on layer 5 (session) and on layer 6 (presentation) of the OSI model. TLS was derived from SSL and then standardized. For more detailed information about SSL and TLS, see RFC 6101 - The Secure Sockets Layer (SSL) Protocol Version 3.0 and RFC 5246 - The Transport Layer Security (TLS) Protocol Version 1.2.