I am using vsftpd with active ftp. I have module "ip\_conntrack\_ftp" (in /etc/sysconfig/iptables-config) on and port 21 is open. Connecting with FTP works, but FTPS doesn't. I can login but get no listing:

```
227 Entering Passive Mode
LIST -a

```

When stopping the firewall it works (I mean iptables on the ftp server itself). I read in <http://www.experts-exchange.com/Software/Server_Software/File_Servers/FTP/Q_22418222.html> that it's not possible to use FTPS with active FTP. Is this true?

My iptables configuration:

```
*filter
:INPUT DROP [15:2752]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [132:159725]
-A INPUT -i lo -j ACCEPT
-A INPUT -d 127.0.0.0/255.0.0.0 -i ! lo -j REJECT --reject-with icmp-port-unreachable
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 21 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 21 -m state --state NEW -j ACCEPT
-A INPUT -p tcp -m tcp --dport 990 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 989 -j ACCEPT
COMMIT

```