FTP 211 System Status vs 228 Entering Long Passive Mode
Both FTP 211 (System Status) and 228 (Entering Long Passive Mode) belong to the 2xx Positive Completion category. 211 indicates that system status or system help reply. The server provides information about its current status or available features. Meanwhile, 228 means that entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
Mô tả
System status or system help reply. The server provides information about its current status or available features.
Khi bạn thấy mã này
After issuing the STAT command without arguments, the server returns its system status and supported features.
Cách khắc phục
No fix needed — this is an informational response. Use the information to understand the server's capabilities and current state.
Mô tả
Entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
Khi bạn thấy mã này
After issuing the LPSV command on servers that support long addresses. Rarely seen in practice as EPSV is preferred.
Cách khắc phục
No fix needed, but consider using EPSV (Extended Passive Mode) instead, which is more widely supported and simpler to parse.
Sự khác biệt chính
FTP 211: System status or system help reply. The server provides information about its current status or available features.
FTP 228: Entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
You encounter 211 when after issuing the STAT command without arguments, the server returns its system status and supported features.
You encounter 228 when after issuing the LPSV command on servers that support long addresses. Rarely seen in practice as EPSV is preferred.
Khi nào dùng cái nào
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 228 (Entering Long Passive Mode): No fix needed, but consider using EPSV (Extended Passive Mode) instead, which is more widely supported and simpler to parse.