在CISCO设备的接口上防止SMURF攻击的命令:
ARouter(Config-if)#noipdirected-broadcast
BRouter(Config-if)#noipproxy-arp
CRouter(Config-if)#noipredirects
DRouter(Config-if)#noipmask-reply
ARouter(Config-if)#noipdirected-broadcast
BRouter(Config-if)#noipproxy-arp
CRouter(Config-if)#noipredirects
DRouter(Config-if)#noipmask-reply