FTP 212 Directory Status vs 425 Can't Open Data Connection
FTP 212 (Directory Status) is a 2xx Positive Completion response, while 425 (Can't Open Data Connection) is a 4xx Transient Negative response. 212 indicates that directory status reply. The server provides information about the current directory or a specified directory. In contrast, 425 means that can't open data connection. The server was unable to establish the data channel needed for the file transfer.
Описание
Directory status reply. The server provides information about the current directory or a specified directory.
Когда вы это видите
After issuing the STAT command on a directory, the server returns the directory listing or status information.
Как исправить
No fix needed — this is an informational response showing directory contents or status.
Описание
Can't open data connection. The server was unable to establish the data channel needed for the file transfer.
Когда вы это видите
When a firewall or NAT is blocking the data connection, or the client failed to connect to the server's passive port.
Как исправить
Switch between active (PORT) and passive (PASV) modes. Check that your firewall allows the FTP data port range and that NAT is configured correctly.
Ключевые различия
212 is a 2xx Positive Completion response, while 425 is a 4xx Transient Negative response.
FTP 212: Directory status reply. The server provides information about the current directory or a specified directory.
FTP 425: Can't open data connection. The server was unable to establish the data channel needed for the file transfer.
You encounter 212 when after issuing the STAT command on a directory, the server returns the directory listing or status information.
You encounter 425 when when a firewall or NAT is blocking the data connection, or the client failed to connect to the server's passive port.
Когда что использовать
For 212 (Directory Status): No fix needed — this is an informational response showing directory contents or status. For 425 (Can't Open Data Connection): Switch between active (PORT) and passive (PASV) modes. Check that your firewall allows the FTP data port range and that NAT is configured correctly.