You missunderstood me 
Code:
iptables -A INPUT -p tcp --dport 12000 -j ACCEPT
ssh dropbear
Code:
iptables -A INPUT -p tcp --dport 81 -j ACCEPT
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j DNAT --to-destination 192.168.1.1:81
this should allow access from wan to my webserwer placed on asus apache
Code:
iptables -A INPUT -p tcp --dport 6112 -j ACCEPT
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 6112 -j DNAT --to-destination 192.168.1.2:6112
Warcraft part 
Now i need to drop connections made from WLAN to webinterface of asus (still on port 80) but ofc i want to allow surfing web on those ones
Putting
iptables -A INPUT -p tcp -i eth2 --doprt 80 -d 192.168.1.1 -j DROP
doesnt change anything