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SSL and TLS

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The Transport Layer Security Protocol V1.0 is an enhancement of the SSL V3.0 protocol which was standardized by the Internet Engineering Task Force (IETF) in RFC 2246. Although no major differences exist between TLS V1.0 and SSL V3.0, interoperability between the two protocols is not possible without further provision. TLSv1.2 and TLSv1.3 are enhancements of the TLS protocol, which rectify the deficiencies found in earlier protocol versions.

Although SSL was initially developed for the HTTP protocol, TLS can also be used for securing other protocols of the Application Layer, such as FTP, SMTP or TELNET.