FAQ  > Programming and technique > FTP connection problems

If you’re using a firewall or a router, they may be a problem with the connection of the server to your computer.
You have to check the parameters of the FTP client so that it functions in passive mode and redo a test. For FileZilla, you can find explanations to passing into passive mode on the following website: http://christian.caleca.free.fr/ftp/plus_avant.htm