[SOLVED] FTP port forward

Installing and Using OpenWrt Network and Wireless Configuration
10

Try to enable conntrack helper globally:

cat << EOF >> /etc/sysctl.conf
net.netfilter.nf_conntrack_helper=1
EOF
/etc/init.d/sysctl restart

If the issue persists, check the output:

sysctl net.netfilter.nf_conntrack_helper