hello all, May be, you need accept the port 20 and 21 -j ACCEPT for the standard ftp. Eric -----Original Message----- From: netfilter-bounces@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-bounces@xxxxxxxxxxxxxxxxxxx]On Behalf Of Boryan Yotov Sent: Thursday, January 05, 2006 10:15 AM To: netfilter@xxxxxxxxxxxxxxxxxxx Subject: Re: Ftp (pass mode ) and Iptables ludi wrote: > I have a ftp server and run a script of iptables on the server (not a > nat-gateway). The follow is the script: > > iptables -F OUTPUT > iptables -F INPUT > iptables -F FORWARD > > > > iptables -A INPUT -p udp -i eth0 -s 0/0 -d $HOME_ADDR --dport 53 -j ACCEPT > iptables -A INPUT -p tcp -i eth0 -s 0/0 -d $HOME_ADDR --dport 22 -j ACCEPT > iptables -A INPUT -p udp -i eth0 -s 0/0 -d $HOME_ADDR --sport 53 -j ACCEPT > iptables -A INPUT -p tcp -i eth0 -s 0/0 -d $HOME_ADDR --dport 80 -j ACCEPT > iptables -A INPUT -p icmp -i eth0 -s 0/0 -d $HOME_ADDR -m limit > --limit 6/m --limit-burst 6 -j ACCEPT > iptables -A INPUT -i lo -s 0/0 -d 127.0.0.1/32 -j ACCEPT > iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT > iptables -P INPUT DROP > > > iptables -A OUTPUT -o lo -s 127.0.0.1 -j ACCEPT > iptables -A OUTPUT -o eth0 -s $HOME_ADDR -j ACCEPT > iptables -P OUTPUT DROP > Now, my question is that I can not connect the ftp server with pass > mode until I stop the iptables. I had tried the ip_conntrack_ftp.o > module, but it didnt effect. > Could anyone give me some idea? Do you have TLS or SSL encryption over the FTP's server command channel?