局域网中的计算机系统常常受到一种“地址解析协议欺骗”(ARP欺骗)的恶意木马程序的入侵破坏,严重影响了局域网中用户计算机系统的正常运行。作者结合当前网络环境的实际情况,以及本人这些年来从事校园网络维护的经验,以网络的高效与安全为出发点全面而概述地谈ARP协议与ARP欺骗攻击防范方面的问题。 Computer systems in LANs are often compromised by the intrusion of malicious Trojans called “Address Resolution Protocol Fraud” (ARP spoofing), which seriously affects the normal operation of the user’s computer system in the LAN. Based on the actual situation of the current network environment and my experience in campus network maintenance over the years, the author starts with a comprehensive overview of the ARP protocol and ARP spoofing prevention in the light of network efficiency and security.