FTP

FTP 150 File Status OK vs 230 User Logged In

FTP 150 (File Status OK) is a 1xx Positive Preliminary response, while 230 (User Logged In) is a 2xx Positive Completion response. 150 indicates that the file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer. In contrast, 230 means that user logged in, proceed. The authentication was successful and the user has full access to the FTP server.

설명

The file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer.

이 코드를 보게 되는 경우

Right before a file download or upload begins, confirming the file is accessible and the data channel is being opened.

해결 방법

No fix needed — this means the transfer is about to start. If the transfer stalls after this reply, check firewall rules blocking the data connection.

설명

User logged in, proceed. The authentication was successful and the user has full access to the FTP server.

이 코드를 보게 되는 경우

After providing valid credentials with USER and PASS commands, or after anonymous login on servers that allow it.

해결 방법

No fix needed — you are authenticated. Proceed with CWD, LIST, RETR, STOR, or other file operations.

주요 차이점

1.

150 is a 1xx Positive Preliminary response, while 230 is a 2xx Positive Completion response.

2.

FTP 150: The file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer.

3.

FTP 230: User logged in, proceed. The authentication was successful and the user has full access to the FTP server.

4.

You encounter 150 when right before a file download or upload begins, confirming the file is accessible and the data channel is being opened.

5.

You encounter 230 when after providing valid credentials with USER and PASS commands, or after anonymous login on servers that allow it.

언제 어떤 것을 사용할지

For 150 (File Status OK): No fix needed — this means the transfer is about to start. If the transfer stalls after this reply, check firewall rules blocking the data connection. For 230 (User Logged In): No fix needed — you are authenticated. Proceed with CWD, LIST, RETR, STOR, or other file operations.

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