Here's my experience on actively contributing in the resolution of a problem related to Active FTP & gnu-linux/ip-tables based firewall solution. First, make sure your firewall has loaded the following modules:

ip_conntrack_ftp
ip_nat_ftp

Then check that the right Forwarding rules apply:

iptables -I FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT

being "RELATED" the important part. Hope it saves the day to someone...mines already got lost 🙁

4.5/5 - (2 votes)

3 comments on “Do you Active FTP through Firewall+NAT ?

Comments are closed.