Generally, when we use FTP to connect the host and the local, as long as the host information and account information are correct, we can basically connect, but there are also problems. For example, there is a problem of “227 Entering Passive Mode” when connecting to FTP this time. What is the specific reason and solution?
When the “227 Entering Passive Mode” error message appears, it may be caused by a problem with the passive mode (Passive Mode) configured on the FTP server. The way to solve this problem is as follows:
1. Check the firewall settings
In passive mode, the FTP server needs to use some ports for data transmission, and the firewall may block the connection of these ports. Make sure your firewall allows the port range used by the FTP server, usually between 1024 and 65535.
2. Check the router settings
If your FTP server is on a LAN and is connected to the Internet via a router, then you need to make sure that the router forwards the ports required for FTP data transfer. Refer to the instruction manual for your router model and brand to learn how to set up port forwarding.
3. Check FTP server configuration
Some FTP server software allows you to specify a port range to use in passive mode. Make sure your FTP server configuration correctly specifies the port range for passive mode, and the correct external IP address.
4. Use active mode instead of passive mode
If you have tried the above steps but still can’t solve the problem, you can try to use Active Mode to connect to the FTP server. In active mode, the FTP client actively establishes a data connection instead of waiting for the server to initiate a connection. Different FTP client software may have different setting methods.
Finally, such a problem is generally only possible with virtual hosts. Here I can connect by changing the passive mode.