FTP 220 Service Ready vs 553 File Name Not Allowed
FTP 220 (Service Ready) is a 2xx Positive Completion response, while 553 (File Name Not Allowed) is a 5xx Permanent Negative response. 220 indicates that service ready for new user. This is the greeting message sent by the FTP server when a client first connects. In contrast, 553 means that requested action not taken. File name not allowed. The file or directory name violates the server's naming rules or filesystem restrictions.
Deskripsi
Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
Ketika Anda Melihatnya
Immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
Cara Memperbaiki
No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.
Deskripsi
Requested action not taken. File name not allowed. The file or directory name violates the server's naming rules or filesystem restrictions.
Ketika Anda Melihatnya
When you try to create or rename a file with characters the server's filesystem does not allow, such as special characters or reserved names.
Cara Memperbaiki
Rename the file to use only allowed characters. Avoid special characters like ?, *, |, <, >, and leading/trailing spaces or dots.
Perbedaan Utama
220 is a 2xx Positive Completion response, while 553 is a 5xx Permanent Negative response.
FTP 220: Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
FTP 553: Requested action not taken. File name not allowed. The file or directory name violates the server's naming rules or filesystem restrictions.
You encounter 220 when immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
You encounter 553 when when you try to create or rename a file with characters the server's filesystem does not allow, such as special characters or reserved names.
Kapan Menggunakan Yang Mana
For 220 (Service Ready): No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate. For 553 (File Name Not Allowed): Rename the file to use only allowed characters. Avoid special characters like ?, *, |, <, >, and leading/trailing spaces or dots.