在网络技术不断发展的今天,网络安全已成为越来越复杂的问题。本文对防火墙和入侵检测技术作了介绍,并提出了将这两种技术结合起来,取长补短,共同维护网络安全的方法。文末以防范一些Internet攻击为例,说明了包过滤防火墙与网络入侵检测系统的具体协作方法。 With the continuous development of network technology, network security has become an increasingly complex issue. This paper introduces the firewall and intrusion detection technology, and puts forward a method of combining these two technologies to complement each other and jointly safeguard the network security. At the end of the article to prevent some Internet attacks, for example, illustrates the packet filtering firewall and network intrusion detection system for the specific collaboration method.