I am having a hair pulling issue with my VSFTPD. I am not sure where to turn and I have went through to make sure everything is working properly and when trying to connect to ftp using ftp localhost I am able to login with the username and password I have specified. When I try to connect from outside I get the prompt Connected to domainname.com. but no prompt for user and password in addition when using an FTP client it hangs up and never connects.

The server is running Ubuntu 12.04 LTS and VSFTPD 2.3.5

Here is the output of running iptables -L : http://pastie.org/4892233

Here is he output when running ps -FC vsftpd :

root     14343     1  0  1168   984   3 16:55 ?        00:00:00 /usr/sbin/vsftpd

Here is output of running netstat -tlpn | grep vsftpd :

tcp6       0      0 :::21                   :::*                    LISTEN      14343/vsftpd    

I have uninstalled and reinstalled many times and tried several different configurations and am at a complete loss on why this may not be working. We very often use the same configuration on the same type of servers with no issues.

Thank you in advance for your help.