Connection error when using vsftpd_v2 for starting ftp server

When I use the vsftpd_v2 for connecting to ftp server, the connection is getting established but as soon as I try to upload or download a file, it says
local: FileToTransfer remote: FileToTransfer
200 PORT command successful. Consider using PASV.
150 Opening BINARY mode data connection for FileToTransfer (1048576000 bytes).
421 Service not available, remote server has closed connection

Just move forward you will get to know later. Most of the versions are faulty and it’s one of that version. So don’t waste your time.

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Keep In mind @shivangi_48 some versions are faulty you have to make your analysis report accordingly. Check this out link shared by team crio you will get very helpful hands-on and excel sheets
https://drive.google.com/drive/folders/1umNCmKLf_lHnGMuUHdQNPHfgYO_SoLzf

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Just don’t get forget some versions are intentionally faulty, as you progress through the module. That alone will clear all your doubts.

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