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Explicit Mode

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  1. Knowledge BaseLinux Cloud HostingWindows Cloud Hosting
    · 4 min read

    Differences Between FTP Implicit and Explicit Modes

    FTP Implicit mode assumes encryption from the first byte and negotiates SSL immediately on port 990, while Explicit mode starts with an unencrypted connection on port 21 before issuing an AUTH SSL command to upgrade. Implicit is deprecated. Both modes encrypt the data connection. Explicit on port 21