(This book is a useful tool book that integrates the usage methods of various network inspection, testing, monitoring, analysis and test tools and software with the most mainstream, the most widely used and the most powerful functions at that time. It is the Chinese user manual of many popular large-scale tool software. In addition to the small and useful LAN inspection and function test tool software introduced in Chapter 1, the following chapters are full of the most popular at that time. The latest mainstream and latest version of other large-scale tool software. Among them, snifferportable4.8 was the most widely used large-scale network analysis tool software at that time. Through them, they can not only monitor all network communications and find problems in network communications in time, but also provide a solid basis for network protection and optimization through in-depth analysis of captured data packets; Virtualpc2007 and vmwareworkstation6.0/ace2.0 were two of the most mainstream virtual machine large-scale tool software at that time. Through them, multiple operating systems can be run together on a PC to build various forms of virtual networks composed of different systems, just like having multiple physical hosts and physical networks, they can also run multiple server systems on a physical host together, making full use of host capital; Bosonnetsimforccnp7.0 is the most important switch and router simulator in Cisco CCNA and CCNP certification, which is very useful for those who do not have a field test environment to practice Cisco equipment.)