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 Largely superseded by EPSV (229).
คำอธิบาย
System status or system help reply. The server provides information about its current status or available features.
เมื่อคุณพบเห็น
After issuing the STAT command without arguments, the server returns its system status and supported features.
วิธีแก้ไข
No fix needed — this is an informational response. Use the information to understand the server's capabilities and current state.
คำอธิบาย
Entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
เมื่อคุณพบเห็น
After issuing the LPSV command on servers that support long addresses. Rarely seen in practice as EPSV is preferred.
วิธีแก้ไข
No fix needed, but consider using EPSV (Extended Passive Mode) instead, which is more widely supported and simpler to parse.
ความแตกต่างหลัก
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 Largely superseded by EPSV (229).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.
ควรใช้อันไหนเมื่อไร
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.