随着网络信息化的发展,我们的工作生活越来越离不开计算机,但随之而来的网络安全问题也越来越突出。计算机病毒的传播,网络攻击的盛行,使得网络安全凸显重要。众所周知,网络安全工作是一项复杂的系统工程,需要根据网络特点 With the development of network information, our work life is inseparable from the computer more and more, but the ensuing network security issues are more and more prominent. The spread of computer viruses, the prevalence of cyber attacks, making network security highlights the important. As we all know, network security work is a complex system engineering, according to network characteristics