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随着计算机网络的发展,网络中的安全问题也日趋严重。当越来越多的企业和部门接入互联网络时,对于本企业和部门的内部网络的保护就更加的重要。只要有连通性的网络信息系统就存在网络安全的风险,攻和防之间的力量和手段的对比是在不断变化的。本文从被动防御和主动防御两个方面,结合接入互联网的不同方式,介绍网络安全中的防火墙与入侵检测这两个技术手段。
With the development of computer networks, security problems in the network are also becoming more serious. When more and more enterprises and departments are connected to the Internet, the protection of the internal networks of the enterprises and departments is even more important. As long as there is a network of information systems connectivity has the risk of network security, the power and means of comparison between attack and defense is constantly changing. This paper introduces two methods of firewall and intrusion detection in network security from two aspects of passive defense and active defense, combining with different ways of accessing Internet.