FTP 211 System Status vs 426 Connection Closed
FTP 211 (System Status) is a 2xx Positive Completion response, while 426 (Connection Closed) is a 4xx Transient Negative response. 211 indicates that system status or system help reply. The server provides information about its current status or available features. In contrast, 426 means that connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
Descrição
System status or system help reply. The server provides information about its current status or available features.
Quando você o vê
After issuing the STAT command without arguments, the server returns its system status and supported features.
Como corrigir
No fix needed — this is an informational response. Use the information to understand the server's capabilities and current state.
Descrição
Connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
Quando você o vê
When a file transfer is interrupted due to a network timeout, client disconnect, or the data connection dropping mid-transfer.
Como corrigir
Retry the transfer. If it keeps failing, check network stability, increase timeout values, and verify there are no firewalls killing idle connections.
Diferenças principais
211 is a 2xx Positive Completion response, while 426 is a 4xx Transient Negative response.
FTP 211: System status or system help reply. The server provides information about its current status or available features.
FTP 426: Connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
You encounter 211 when after issuing the STAT command without arguments, the server returns its system status and supported features.
You encounter 426 when when a file transfer is interrupted due to a network timeout, client disconnect, or the data connection dropping mid-transfer.
Quando usar qual
For 211 (System Status): No fix needed — this is an informational response. Use the information to understand the server's capabilities and current state. For 426 (Connection Closed): Retry the transfer. If it keeps failing, check network stability, increase timeout values, and verify there are no firewalls killing idle connections.