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Explicit FTPS support was added to UFTP for Universal Agent 7.1.0.0. When an FTP server enables explicit TLS/SSL support, it allows clients to request encrypted sessions over the standard FTP port 21. This is different from implicit TLS/SSL support described above.
Because an FTP client may not always know whether the FTP server's port 21 is accepting SSL-enabled connections (i.e., it may only accept unencrypted, plain-text FTP sessions), explicit FTPS is not really a distinct protocol per se. Therefore, UFTP offers explicit FTPS support by applying new options and supported values to the existing FTP PROTOCOL value.
UFTP can also request TLS/SSL support over FTP by prefixing the value specified for the HOST option with ftpes://.
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