FTP 211 System Status vs 220 Service Ready
Both FTP 211 (System Status) and 220 (Service Ready) 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, 220 means that service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
Описание
System status or system help reply. The server provides information about its current status or available features.
Когда вы это видите
After issuing the STAT command without arguments, the server returns its system status and supported features.
Как исправить
No fix needed — this is an informational response. Use the information to understand the server's capabilities and current state.
Описание
Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
Когда вы это видите
Immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
Как исправить
No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.
Ключевые различия
FTP 211: System status or system help reply. The server provides information about its current status or available features.
FTP 220: Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
You encounter 211 when after issuing the STAT command without arguments, the server returns its system status and supported features.
You encounter 220 when immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
Когда что использовать
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 220 (Service Ready): No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.