随着计算机网络的迅速发展,安全问题受到人们越来越多的关注.计算机网络的脆弱及其潜在的威胁,使计算机用户深受其害,因此采取强有力的安全策略,保障网络主机安全是非常必要的.在网络日益复杂化、多样化的今天,如何保护网络和应用及及信息的安全,已成了各级网络管理人员最重视的事.
With the rapid development of computer networks,security issues by people more and more attention.The vulnerability of computer networks and their potential threat to computer users suffer,so to take strong security policy to protect the network host security is very necessary.The network increasingly complex and diverse,how to protect networks and applications,and and information security,network management personnel at all levels has become the most important thing.