I've been trying to block a port range for one of the users on my network but it just never works, the connections keep popping up in ip_conntrack.

I have all the following rules in my firewall.user file but none of them appear to halt the traffic.

Is there any modification that I can do to make it start working?

iptables        -A forwarding_wan -p tcp -m mac --mac-source 00:00:00:00:00:00 --sport 90: -j DROP
iptables        -A forwarding_wan -p tcp -m mac --mac-source 00:00:00:00:00:00 --dport 90: -j DROP
iptables        -A INPUT -p tcp --dport 90: -d 192.168.1.215 -j DROP
iptables        -A INPUT -p udp --dport 90: -d 192.168.1.215 -j DROP
iptables        -A OUTPUT -p tcp --dport 90: -s 192.168.1.215 -j DROP
iptables        -A OUTPUT -p udp --dport 90: -s 192.168.1.215 -j DROP
iptables        -A forwarding_rule -p tcp --dport 90: -s 192.168.1.215 -j DROP
iptables        -A forwarding_rule -p udp --dport 90: -s 192.168.1.215 -j DROP