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Hello!!

I have been using FileZilla for a while to transfer data from a client to a server in a local network. Everything was working well when suddenly, I got this File transfer failed. I have searched on internet but nothing found. The logs are here:

Status: Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Status: Logged in
Status: Retrieving directory listing...
Status: Directory listing of "/" successful
Status: Retrieving directory listing of "/ple"...
Status: Directory listing of "/ple" successful
Status: Retrieving directory listing of "/ple/2021"...
Status: Directory listing of "/ple/2021" successful
Status: Connecting to 00.00.00.00:00...
Status: Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Status: Logged in
Status: Starting download of /ple/2021/ple_pl_.sql.gz
Command: CWD /ple/2021
Response: 250 CWD successful. "/ple/2021" is current directory.
Command: PWD
Response: 257 "/ple/2021" is current directory.
Command: TYPE I
Response: 200 Type set to I
Command: PASV
Response: 227 Entering Passive Mode (00,00,00,00,00,00)
Command: RETR ple_pl_.sql.gz
Response: 150 Opening data channel for file download from server of "/ple/2021/ple_pl_.sql.gz"
Response: 426 Connection closed; aborted transfer of "/ple/2021/ple_pl_.sql.gz"
Error: File transfer failed
Status: Starting download of /ple/2021/ple_pl_.sql.gz
Command: PASV
Response: 227 Entering Passive Mode (00,00,00,00,00,00)
Command: RETR ple_pl_.sql.gz
Response: 150 Opening data channel for file download from server of "/ple/2021/ple_pl_.sql.gz"
Response: 426 Connection closed; aborted transfer of "/ple/2021/ple_pl_.sql.gz"
Error: File transfer failed
Status: Starting download of /ple/2021/ple_pl_.sql.gz
Command: PASV
Response: 227 Entering Passive Mode (00,00,00,00,00,00)
Command: RETR ple_pl_.sql.gz
Response: 150 Opening data channel for file download from server of "/ple/2021/ple_pl_.sql.gz"
Response: 426 Connection closed; aborted transfer of "/ple/2021/ple_pl_.sql.gz"
Error: File transfer failed
Status: Disconnected from server
Status: Connection closed by server


Hope someone can help me! Thank you so much!

Response: 227 Entering Passive Mode (00,00,00,00,00,00)

That is not a valid response to the PASV command. Either the server is broken or a malicious firewall or NAT router between the client and the server has sabotaged the connection.