Is there any firewall(preferred some free :) ) that can block all communication from all ip addresses except from some IP's coming from a particular location...
i basically want to block DDOS attack on my servers its being getting hit from some IP's outside my country
EDIT: i am using 1 window machine and 1 linux machine
EDIT 2: I have heard of some organization running in INDIA that helps us in doing this thing, so i think it is possible. They filter only the IP's coming from india region only and blocks the rest.