FTP 120 Service Ready Soon vs 227 Entering Passive Mode
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 227 (Entering 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, 227 means that entering Passive Mode. The server provides an IP address and port number for the client to connect to for data transfer, formatted as (h1,h2,h3,h4,p1,p2).
Beschreibung
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
Wann Sie es sehen
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
Wie man es behebt
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
Beschreibung
Entering Passive Mode. The server provides an IP address and port number for the client to connect to for data transfer, formatted as (h1,h2,h3,h4,p1,p2).
Wann Sie es sehen
After issuing the PASV command. The server switches to passive mode and tells the client where to connect for data transfer.
Wie man es behebt
No fix needed — parse the IP and port from the response to establish the data connection. If connections fail, check NAT/firewall rules on the passive port range.
Wesentliche Unterschiede
120 is a 1xx Positive Preliminary response, while 227 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 227: Entering Passive Mode. The server provides an IP address and port number for the client to connect to for data transfer, formatted as (h1,h2,h3,h4,p1,p2).
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
You encounter 227 when after issuing the PASV command. The server switches to passive mode and tells the client where to connect for data transfer.
Wann welchen verwenden
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 227 (Entering Passive Mode): No fix needed — parse the IP and port from the response to establish the data connection. If connections fail, check NAT/firewall rules on the passive port range.