drop.sh

#!/bin/bash
while true
do
        r=$(( ( RANDOM % 100 )  + 1 ))

        if [[ "$r" -gt "0" && "$r" -lt "11" ]]; then
                echo "dropping 192.168.1.112"
                iptables -A INPUT -d 192.168.1.112 -p tcp --destination-port 9042 -j DROP
        elif [[ "$r" -gt "10" && "$r" -lt "21" ]]; then
                echo "dropping 192.168.1.113"
                iptables -A INPUT -d 192.168.1.113 -p tcp --destination-port 9042 -j DROP
        else
                echo "flushing"
                iptables -F
        fi

        s=$(( ( RANDOM % 30 )  + 1 ))
        echo "sleeping for $s"
        sleep $s
done