search for: external_ip1

...l traffic iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT # FTP rule iptables -A FORWARD -i $INTERNAL_INTERFACE -o $EXTERNAL_INTERFACE1 -p tcp -s $INTERNAL_LAN --sport $UNPRIVPORTS --dport 21 -m state --state NEW -j ACCEPT iptables -A OUTPUT -o $EXTERNAL_INTERFACE1 -p tcp -s $EXTERNAL_IP1 --sport $UNPRIVPORTS --dport 21 -m state --state NEW -j ACCEPT # FTP mark iptables -t mangle -A FORWARD -o $EXTERNAL_INTERFACE1 -p tcp --dport 21 -j MARK --set-mark 0x21 iptables -t mangle -A OUTPUT -o $EXTERNAL_INTERFACE1 -p tcp --dport 21 -j MARK --set-mark 0x21 iptables -t mangle -A PREROUT...