Most corporate FTPs will reject a connection—even with the right password—unless the user's IP address has been pre-approved by the network’s IT department.
The "cdn1discovery" naming convention suggests a node or an origin server owned by Discovery (now part of Warner Bros. Discovery). CDNs are used to distribute heavy media files—like 4K video, promotional assets, and high-resolution images—to various geographic locations to reduce latency. cdn1discovery ftp