iptables 怎放行QQ和aMule?

如题，现在QQ登不上，aMule完全没速度。
我的是个人电脑ADSL上网，

规则如下：

Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp spt:www
ACCEPT udp -- anywhere anywhere udp spt:domain
ACCEPT tcp -- anywhere anywhere tcp spt:ftp
ACCEPT tcp -- anywhere anywhere tcp spt:4662
ACCEPT tcp -- anywhere anywhere tcp spt:4672
ACCEPT udp -- anywhere anywhere udp spt:4662
ACCEPT udp -- anywhere anywhere udp spt:4672
DROP icmp -- anywhere anywhere
ACCEPT udp -- anywhere anywhere udp spt:8000
ACCEPT udp -- anywhere anywhere udp spt:433
ACCEPT tcp -- anywhere anywhere tcp spt:433
ACCEPT tcp -- anywhere anywhere tcp spt:8000

Chain FORWARD (policy DROP)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination


PS，
aMule的标准用户TCP端口为4662，扩展用户UDP端口4672;
QQ官方说QQ for Linux 需要打开433，8000，80端口，我难道没开？

请有经验的朋友跟我这初识iptables的菜鸟分享一下iptables的经验。