#!bash
#网关mac地址
GATEWAY_MAC=00:D0:F8:FF:4A:23
#目的mac地址
DEST_MAC=ff:ff:ff:ff:ff:ff
#目的ip地址
DEST_IP=172.16.18.254
#本地网卡接口
INTERFACE=eth0
#$INTERFACE的mac地址
MY_MAC=00:11:09:E8:78:DD
#$INTERFACE的ip地址
MY_IP=172.16.18.19#在本机建立静态ip/mac入口 $DEST_IP–$GATEWAY_MAC
arp -s $DEST_IP $GATEWAY_MAC#发送arp reply ,使$DEST_IP更新$MY_IP的mac地址为$MY_MAC
arpoison -i $INTERFACE -d $DEST_IP -s $MY_IP -t $DEST_MAC -r $MY_MAC 1>/dev/null &

Centos5安装：
#http://www.111cn.net
wget http://superb-sea2.dl.sourceforge.net/project/ebtables/arptables/arptables-v0.0.3/arptables-v0.0.3-4.tar.gz
tar zxvf arptables-v0.0.3-4.tar.gz
cd arptables-v0.0.3-4
make
make installarptables规则设置：arptables -F
arptables -P INPUT ACCEPT
#默认策略
arptables -A INPUT --src-ip 192.168.1.1 --src-mac 7A:31:14:42:10:01 -j ACCEPT
#允许本网段特定MAC可进入，且IP与MAC相符
arptables -A INPUT --src-mac ! 74:8E:F8:53:DC:C0 -j DROP
#拒绝非网关MAC
arptables -A INPUT --src-ip ! 192.168.1.1 -j DROP
#拒绝非网关IP保存规则并开机加载：iptables-save > /etc/sysconfig/arptables
/etc/init.d/arptables save
chkconfig arptables on规则保存后重新加载会出错，去除以下文件内-o any字段。/etc/sysconfig/arptables

#!/bin/bash
declare gw=`route -n | grep -e '^0.0.0.0'`
declare gwname=`echo $gw | grep -oe 'w*$'`
declare gwip=`echo $gw | grep -oe '[0-9]{2,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}'`
declare gwmac=`arp -n | grep -e $gwip | grep -oe '[0-9A-F]{2}:[0-9A-F]{2}:[0-9A-F]{2}:[0-9A-
F]{2}:[0-9A-F]{2}:[0-9A-F]{2}'`
echo "switch $gwname arp: $gwip - $gwmac to static"
arp -s $gwip $gwmac
echo "done, off arp reuqest .."
ifconfig $gwname -arp
echo "all done."