FTP 120 Service Ready Soon vs 228 Entering Long Passive Mode
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 228 (Entering Long Passive Mode) is a 2xx Positive Completion response. 120 indicates that the service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly. In contrast, 228 means that entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
الوصف
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
متى تراه
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
كيفية الإصلاح
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
الوصف
Entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
متى تراه
After issuing the LPSV command on servers that support long addresses. Rarely seen in practice as EPSV is preferred.
كيفية الإصلاح
No fix needed, but consider using EPSV (Extended Passive Mode) instead, which is more widely supported and simpler to parse.
الفروق الرئيسية
120 is a 1xx Positive Preliminary response, while 228 is a 2xx Positive Completion response.
FTP 120: The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
FTP 228: Entering Long Passive Mode. An extended version of passive mode that supports longer addresses, including IPv6. Largely superseded by EPSV (229).
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
You encounter 228 when after issuing the LPSV command on servers that support long addresses. Rarely seen in practice as EPSV is preferred.
متى تستخدم أيًا منهما
For 120 (Service Ready Soon): Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator. For 228 (Entering Long Passive Mode): No fix needed, but consider using EPSV (Extended Passive Mode) instead, which is more widely supported and simpler to parse.