Well, all i can say that is, i already blocked the MAC address from going to LAN<=> WAN direction. So, supposedly he can't access to the internet right? Is it because, the bridge and the WAN settings different from each other? like in the pic? But, if i have to do IP filtering, i don't know how to do it, because it has the destination and source and i don't know what it's for. Plus, i'm using DHCP server, so i fi block his IP the comp might be getting a new ip address then. haha.