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The command channel is for sending the commands and responses, and the data channel is for sending the actual data.
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And, it uses two channels between the client and server: the command channel and the data channel. FTP can run in two modes: active and passive. Please refer to the guide on how to resolve this concern: Warning: FTP over TLS is not enabled, users cannot securely log in: You appear to be behind a NAT Router, please configure the passive mode settings and forward a range of ports in your router. These steps were tested on Windows Server 2019, and 2022.
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Kindly refer to this related for how to install and configure FTP server on Windows 10, Event ID 5059: Application pool has been disabled or Changing identity user for IIS Application Pool, and how to Disable HTTP TRACE Method for Apache, IIS, sunOne, and Lotus Domino. Businesses use FTP to send files between computers, and websites use FTP for the uploading and downloading of files from their servers. File Transfer Protocol (FTP) refers to a group of rules that govern how computers transfer files between systems over the internet.
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