Delphi网络通信协议分析与应用实现 我觉得很经典的一本书，DELPHI开发网络应用程序讲的比较透彻，虽然内容有些老，但这些基础知识非常有用。-Delphi analysis of network communication protocols and applications I am a classic book, DELPHI stresses the development of web applications a thorough comparison, although the

Tool for monitoring network activity: - ARP table: remote MAC-address - remote IP - TCP table: currently open TCP connections - UDP table: currently open UDP ports - TCP statistics - UDP statistics - IP statistics - ICMP statistic