Safer firewall is used to protected your PC against spywares, spamwares. It is also a good example for software developers to understand the basic knowledge about firewall. ,Safer firewall is used to protected your PC against spywares, spamwares. It

描述了网络安全与防火墙的基本原理和构造，对TCP/IP、网关的描述与木马、病毒等相关网络知识的深入-Describes the network firewall security and the basic principles and structure of the TCP/IP, Gateway and a descr iption of the Trojan, virus and other related in-depth knowledge network