FileZilla cannot connect to FTP server anymore
|Reported by:||doffine||Owned by:|
|Keywords:||425 data connection TLSOptions NoSessionReuseRequired||Cc:|
|Component version:||188.8.131.52||Operating system type:||Windows|
|Operating system version:||10 1909|
Newly we have the problem that we cannot connect to one of our FTP servers anymore. In the FileZilla log we get the following error lines:
Antwort: 425 Unable to build data connection: Operation not permitted
Fehler: Verzeichnisinhalt konnte nicht empfangen werden
After having some mailing with the data center admin we found that adding the line...
...to our FTP server system solved the problem and we were able again to connect to this server.
We tried several other FTP clients (SmartFTP, WinSCP) and none of them had this problem with this FTP server, only FileZilla. Additionally we tested FileZilla client on about five other Windows systems - on every system the same problem occurs.
Now we think it should be possible to connect with FileZilla without having to disable this security feature (TLSOptions NoSessionReuseRequired) in the FTP server system.