When you try to connect with the FTP client, and it tried to get the directory listing, it may timeout, this is because the “pasv_address” command here:
/etv/vsftpd/vsftpd.conf
pasv_address=xxx.xxx.xxx.xxx
Just outcomment it:
# pasv_address=xxx.xxx.xxx.xxx
And do:
service vsftpd restart
🙂