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When you are using FTP 7, you are using Explicit SSL if you enable FTPS and you assign the FTP site to any port other than port 990. In a typical FTP request, an FTP client will connect to an FTP site over the control channel, and then the client can negotiate SSL/TLS with the server for either the control channel or the data channel.
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FTP 7 supports two different forms of FTP over SSL: Unlike using HTTP over SSL, which requires a separate port and connection for secure (HTTPS) communication, secure FTP communication occurs on the same port as non-secure communication. The element specifies the FTP over Secure Sockets Layer (SSL) settings for the FTP service FTP over SSL was first introduced for IIS 7 in FTP 7.0.
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