Fengyun firewall can be effective attack? ?

Networks were restrictions on the use of specific software is not clear what, the situation after the ARP protection log on to write “found:Arp spoofing packet! Forged source MAC :00-22-15-6C-B3-5D intercept” Is a show that has restricted my block off, right? But why speed is very poor?? It can only reflect the situation in the attacks who network, can not solve the problems it has been attacked?? Hope that an expert can help me ~ ~ ~

clouds can block the effect ARP attack is not very good, I used the recommended try antiarp