【摘要】 NSG(NetworkServerGateway)是面向公司、学校、住宅等提供宽带接入服务的系统。文中讨论了NSG的整体结构和主要功能 ,并通过对Linux系统内核的研究分析 ,提出了NSG在防火墙、流量控制等功能上的实现原理 ,最后结合具体的功能讲述了NSG的实现过程。更多还原

【Abstract】 Network Server Gateway(NSG) is an integrated network server system, offering broadband access service to companies, schools, apartments, etc. The overall structure and main functions of NSG are discussed. Based on the analysis of Linux kernel, the principles and strategies to implement the firewall, flow control and other functions of NSG are given.更多还原