摘 要：由于信息网络的脆弱性与对系统依赖性的矛盾，存在着潜在的威胁，信息安全威胁使安全事件屡屡发生、波及甚广、危害极大。因此，网络安全是当前一个很重要的研究课题和亟待解决的问题。而防火墙可以说是保护网络安全最有效和重要的安全设备。随着基于Internet的商业化应用的快速发展，防火墙产品正在成为信息安全产业的热点。作为隔离可信网络与公共网络的屏蔽，防火墙在开放的物理网络环境中构建了逻辑意义上封闭的专用网络。论述了网络防火墙安全技术的分类及其主要技术特征。所以防火墙实际上是一种隔离技术。它在开放的公共网络与私有的内部网络之间提供访问控制，通过设定一定的安全策略和规则，允许可信的网络访问和数据通信，拒绝不可信的或未获得授权的通信。
关键词：网络安全 防火墙
Abstract : Due to the potential threat brought by the contradictions between information network vulnerability and dependence on the system,
The information security threats caused frequent security incidents which are widely spreading and very harmful. Therefore, the current network security is a very important issue and problems to be solved. Firewall protection can be considered the most effective network security and important safety equipment. With the rapid development of Internet-based commercial application , firewall product is becoming a hot industry in information security. As a credible network isolation and the public network shielding, firewall constructed a logically closed dedicated network in an open physical network environment. the paper discusses the classification of network firewall security technologies and its main technical features. Therefore, the firewall is actually an isolation technology, it provides internal access control between the open public networks and private networks. By setting certain safety rules and strategies, the firewall can allow reliable network access and data communications as well as deny incredible or unauthorized communications. Keywords : network security, firewall
The information security threats caused frequent security incidents which are widely spreading and very harmful. Therefore, the current network security is a very important issue and problems to be solved. Firewall protection can be considered the most effective network security and important safety equipment. With the rapid development of Internet-based commercial application , firewall product is becoming a hot industry in information security. As a credible network isolation and the public network shielding, firewall constructed a logically closed dedicated network in an open physical network environment. the paper discusses the classification of network firewall security technologies and its main technical features. Therefore, the firewall is actually an isolation technology, it provides internal access control between the open public networks and private networks. By setting certain safety rules and strategies, the firewall can allow reliable network access and data communications as well as deny incredible or unauthorized communications. Keywords : network security, firewall
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第1个回答 2007-06-04
Abstract: Because of the information network vulnerability and the contradiction to system dependence, existence latent threat, information safety threatens to make the safe event repeatedly happen , affects the maximum very, broad , endangering. Therefore, the network safety is a current very important research problem and problem demanding prompt solution.But, the fire prevention wall so to speak is to protect effective and important security equipment of network safety. The applicative fleetness develops , the fire prevention wall product becomes in course of safe estate of information hot spot with Internet-based commercialization. As the credible network keeping apart and the common network shield,the fire prevention wall has structured the special use network that the logic closes on significance in open physics network environment.The classification having discussed the network fire prevention wall safety technology's and their
main technology characteristic. Technology keeping apart therefore the fire prevention wall is one
kind in fact. It is controlled in providing a visit between the open common network and the private
inside network , is allows credible network visit and data communication , is declines the
authoritative communication no, credible or not has gained by setting up certain safety tactics and
regulation. Keywords: Network safety fire prevention wall
main technology characteristic. Technology keeping apart therefore the fire prevention wall is one
kind in fact. It is controlled in providing a visit between the open common network and the private
inside network , is allows credible network visit and data communication , is declines the
authoritative communication no, credible or not has gained by setting up certain safety tactics and
regulation. Keywords: Network safety fire prevention wall
