I'm trying to configure a vsftp server on one of my ec2 instances but when I try to connect via a ftp client in passive mode I receive the error message "Server sent passive reply with unroutable address. Passive mode failed."
I have added to my vsftpd.conf file the following lines
pasv_enable=YES
pasv_min_port=1024
pasv_max_port=1048
port_enable=YES
pasv_address=xxx.xxx.xxx.xxx
and I have configured ports 20,21 and 1024-1048 in my security group.
What am I missing?
I find the solution to the problem...
If the instance has and ipv6 address associated vsftpd(bug? desired behaviour? who knows...) will always return 0.0.0.0 as remote address.
You can avoid this behaviour setting this parameters:
listen=YES
listen_ipv6=NO