Isso pode valer a pena: de acordo com o wiki do FileZilla :
By default, FileZilla Client asks the operating system for the machine's IP address and for the number of a free port. This configuration can only work if you are connected to the internet directly without any NAT router, and if you have set your firewall to allow incoming connections on all ports greater than 1024.
If you have a NAT router, you need to tell FileZilla your external IP address in order for active mode connections to work with servers outside your local network:
If you have a fixed external IP address, you can enter it in FileZilla's configuration dialog.
If you have a dynamic IP address, you can authorize FileZilla to obtain your external IP address from a special website. This will occur automatically each time FileZilla is started. No information will be submitted to the website (regardless of FileZilla version).
De acordo com o wiki, você deve ser capaz de abrir Setings, em Connection, selecione a guia Active Mode
, e para o campo Get external IP address from the following URL...
coloque http://ip.filezilla-project.org/ip.php
(não é possível comprovar isso porque acabou de dizer 127.0. 0,1 quando eu tentei no navegador, mas pode saber a diferença). Gostaria apenas de tentar entrar no meu endereço IP externo manualmente primeiro.