求翻译：伴随着电子商务和 Internet 应用领域的不断扩展，网络安全环境所面临的挑战也日趋严峻。路由器作为网络最前沿的“卫士”，面临的威胁种类日渐增多。本系统详细阐述了当前路由器面临的主要安全威胁，以及这些威胁的工作原理和应对策略。本设计采用Cisco Packet Tracer 5.3为平台，通过仿真模拟实验的方式来理解和掌握路由器面临的安全威胁及具体的操作方法，对于在当今以路由器为核心的网络安全管理中，具有非常好的便利性和实用性。是什么意思？

Along with the continuous expansion of e-commerce and internet applications, network security environment facing the challenges are becoming increasingly severe. Router as the network the forefront of the "guardian" and the increasing number of types of threats. The system described in detail the ma

正在翻译，请等待...

Is following the electronic commerce and the Internet application domain unceasing expansion, the challenge which the network security environment faces day by day is also stern.The router took network most front “bodyguard”, faced with the threat type increases day after day.This system elaborated

正在翻译，请等待...

正在翻译，请等待...