Handling connection reset or interruption when uploading large files via FTP, and the same situation occurs when reconnecting and uploading.

When uploading large files, the connection is often reset or interrupted. Reconnecting to upload produces the same error. The specific errors are shown in the following figures:

Cause: The data center firewall is set to disconnect after 5 minutes of TCP idle time. If you use passive mode to upload larger files, a timeout is likely to occur when the upload speed is relatively slow, so the connection will be interrupted and reset.

Solution: Set the FTP software to active mode (port mode) for connection and upload.

The following are setup methods for several commonly used FTP clients:

1. LeapFTP

2. FlashFXP

3. FileZila

4. CuteFTP