ARP协议获得局域网内活动主机物理地址程序ARP协议对网络安全具有极其重要的意义。通过伪造IP地址和MAC地址实现ARP欺骗，能够在网络中产生大量的ARP通信量使网络阻塞。 -LAN ARP protocol to obtain the physical address of the host program activities within the ARP protocol on network security is extremely important significance. By