I think an ARP Firewall is really essencial to be developed.
In our school we have to use a router,cause’ it’s impossible to connect to the Internet directly,this will cost every one lots of money.So we have to share.
But some people would try to limit your speed,even cut your Internet using P2Pover ,NetCut etc.
Kingsoft Beike Arp Firewall,360 Arp Firewall this seems doesn’t word.

BY THE WAY, I like COMODO Firewall very much.

Please do not double post.