本书介绍TCP/IP及其应用。TCP/IP是Internet上使用的协议，而Internet是世界上最大的互联网络。本书内容十分丰富，几乎涵盖了有关TCP/IP的各个方面，包括开放式通信模型、TCP/IP通信模型、IP网络中的命名和寻址机制、地址解析及反向地址解析协议、DNS域字服务器、WINS、地址发现协议、IPv6、IP网络中的路由协议(RIP、OSPF等)、互联网打印协议、LDAP目录服务、远程访问协议、IP安全与防火墙。本书介绍了如何为Windows 9x/NT配置TCP/IP；还介绍了如何使用TCP/IP应用程序，包括远程登录、FTP、Web浏览等。

-The book introduced the TCP/IP and its application. TCP/IP is the protocol used on Internet, and the Internet is the world' s largest Internet network. The book is rich in content, almost covering the TCP/IP in all its aspects, including open communication model, TCP/IP communication model, IP network naming and addressing mechanisms, and reverse address resolution ARP, DNS domain word server, WINS, the address discovery protocol, IPv6, IP network routing protocols (RIP, OSPF, etc.), Internet Printing Protocol, LDAP directory services, remote access protocol, IP security and firewall. The book describes how to configure Windows 9x/NT for the TCP/IP　also describes how to use the TCP/IP applications, including Telnet, FTP, Web browsing and so on.