Go to Site Manager > Transfer Settings.Use only Passive mode to connect over FTP in the Filezilla client: Open port 20 on the server following the steps from the Resolution section of the article below: Unable to connect to a Plesk server via FTP when FTP ports are filtered by a firewall: Connection timed out. After a short Internet connectivity issue, in an attempt to reconnect to FTP it will try using Active mode instead, which is not allowed on the server's side. In this mode, FileZilla first establishes a connection with the FTP server using Passive mode. Filezilla should retry/reque automatically Theres still no function to resend failed files BUT if you reupload the whole bunch of files again filezilla would ask you how to handle existing files > chose to leave existing files alone > only missing files will be uploaded Short: reupload all files and choes to leave existing files alone. The incoming traffic to port 20/tcp(ftp-data) has to be allowed in order to establish the FTP data transfer while connecting via FTP in Active Mode.īy default, in FileZilla client > Site Manager > Transfer Settings > Transfer mode is set to Default. Port 20 is reported to be filtered on the server: On failed attempts to connect, the following error can be found in the /var/log/auth.log log file:ĬONFIG_TEXT: plesk proftpd: 0.0.0.0 (203.0.113.2) - mod_tls/2.7: unexpected OpenSSL error, disconnectingĪ combination of unstable Internet connection, blocked FTP active mode, and FileZilla's settings: PLESK_INFO: Error: The data connection could not be established: ECONNREFUSED - Connection refused by server. The following error is shown in FileZilla: An FTP connection to the Plesk server with the IP address 203.0.113.2 is dropped randomly when FileZilla client is used.

Filezilla log files