本书是与陈向阳 谈宏华 张彦铎 李伟波等主编的 《现代网络技术》 即 “Modern Computer Networks”配套使用的实践指导用书。要求学生按照实验步骤独立完成，从而理解基本的网络原理，提高实际动手能力，以达到对网络知识的完整掌握。-This book is about the macro Huazhang Yan Chen Xiangyang Duo ABA and other editor of the " modern network technology"

Throughout this book, authentication, authorization, and access control are incorporated into the concept of identity. Although these concepts are distinct, they all pertain to each individual user of the network---be it a person or device.