FTP 200 Command OK vs 331 Username OK, Need Password
FTP 200 (Command OK) is a 2xx Positive Completion response, while 331 (Username OK, Need Password) is a 3xx Positive Intermediate response. 200 indicates that the command has been successfully executed. This is a general acknowledgment that the command was understood and carried out. In contrast, 331 means that user name okay, need password. The server recognized the username and is waiting for the corresponding password to complete authentication.
Açıklama
The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
Gördüğünüzde
After issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
Nasıl Düzeltilir
No fix needed — the command succeeded. This is the standard positive response for commands that don't return data.
Açıklama
User name okay, need password. The server recognized the username and is waiting for the corresponding password to complete authentication.
Gördüğünüzde
After sending the USER command with a valid username. The server is prompting for the PASS command.
Nasıl Düzeltilir
Send the PASS command with the correct password. If you get 530 after PASS, the password is wrong — verify your credentials.
Temel Farklar
200 is a 2xx Positive Completion response, while 331 is a 3xx Positive Intermediate response.
FTP 200: The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
FTP 331: User name okay, need password. The server recognized the username and is waiting for the corresponding password to complete authentication.
You encounter 200 when after issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
You encounter 331 when after sending the USER command with a valid username. The server is prompting for the PASS command.
Hangisini Ne Zaman Kullanmalı
For 200 (Command OK): No fix needed — the command succeeded. This is the standard positive response for commands that don't return data. For 331 (Username OK, Need Password): Send the PASS command with the correct password. If you get 530 after PASS, the password is wrong — verify your credentials.