FTP 220 Service Ready vs 221 Closing Control Connection
Both FTP 220 (Service Ready) and 221 (Closing Control Connection) belong to the 2xx Positive Completion category. 220 indicates that service ready for new user. This is the greeting message sent by the FTP server when a client first connects. Meanwhile, 221 means that service closing control connection. The server is logging out and closing the session in response to a QUIT command.
Açıklama
Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
Gördüğünüzde
Immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
Nasıl Düzeltilir
No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.
Açıklama
Service closing control connection. The server is logging out and closing the session in response to a QUIT command.
Gördüğünüzde
After issuing the QUIT command to gracefully disconnect from the FTP server.
Nasıl Düzeltilir
No fix needed — the session has ended normally. Reconnect with a new session if needed.
Temel Farklar
FTP 220: Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
FTP 221: Service closing control connection. The server is logging out and closing the session in response to a QUIT command.
You encounter 220 when immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
You encounter 221 when after issuing the QUIT command to gracefully disconnect from the FTP server.
Hangisini Ne Zaman Kullanmalı
For 220 (Service Ready): No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate. For 221 (Closing Control Connection): No fix needed — the session has ended normally. Reconnect with a new session if needed.