(This book introduces TCP/IP and its use. TCP/IP is the protocol used on the Internet, which is the largest internetwork in the world. This book is very rich in content, covering almost all aspects of relevant TCP/IP, including the open communication model, the TCP/IP communication model, the naming and addressing mechanisms in IP networks, address resolution and reverse address resolution protocols, DNS domains Word Server, WINS, Address Discovery Protocol, IPv6, Routing Protocols in IP Networks (RIP, OSPF, etc.), Internet Printing Protocol, LDAP Directory Services, Remote Access Protocol, IP Security and Firewalls. This book introduced how to configure TCP/IP for Windows9x/NT; also introduced how to use TCP/IP to use programs, including remote login, FTP, Web reading, etc.)