wget http://www.inetbase.com/scripts/ddos/install.sh
chmod 0755 install.sh
./install.sh

write following command to change config file

pico /usr/local/ddos/ddos.conf

NO_OF_CONNECTIONS=100
EMAIL_TO="your email"
BAN_PERIOD=30

change following files chmod to 777
ignore.ip.list
/sbin/iptables