FTP 215 System Type vs 220 Service Ready
Both FTP 215 (System Type) and 220 (Service Ready) belong to the 2xx Positive Completion category. 215 indicates that the NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server. Meanwhile, 220 means that service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
描述
The NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server.
何时出现
After issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
如何修复
No fix needed — use this information to adjust path separators and line endings for the server's OS type.
描述
Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
何时出现
Immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
如何修复
No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.
主要区别
FTP 215: The NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server.
FTP 220: Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
You encounter 215 when after issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
You encounter 220 when immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
何时使用哪个
For 215 (System Type): No fix needed — use this information to adjust path separators and line endings for the server's OS type. For 220 (Service Ready): No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.