浅谈防火墙在网络安全中应用

Application of the firewall in network security

网络是一个复杂的环境系统,既要保证其访问的便捷性,又要考虑对其进行安全的控制,随着网络业务的迅速发展,必须扩展其内网应用服务资源和数据资源的访问领域,以满足越来越多的远程接入需求,比如分支机构接入、合作伙伴接入、客户接入、远程办公接入等。接入的网络环境也越来越复杂,接入的场景更是千变万化。如何在保证内网安全的前提下,确保处于各种复杂的网络环境以及接入场景的合法用户,能够安全接入内网,对现代网络提出了新的挑战。为了提供所需级别的保护,网络需要的是有安全策略的防火墙来防止非法用户访问内部网络上的资源和非法向外传递内部信息。

The network is a complex environmental system,both to ensure their access to convenient, considering safety control for it,with the rapid development of the network business,must expand the application of Intranet resources and data access areas,to meet the needs of remote access to more and more,such as branch access,partners,clients access access,remote office access etc..Access network environment becomes more and more complex,the scene is the ever-changing access.How to guarantee the network safe,to ensure that in a variety of complex network environment and the legitimate user access to the scene,can safely access network,presents a new challenge to the modern network.In order to provide the required level of protection,the network needs is a safe strategy of firewall to prevent illegal user access to the internal network resources and illegal transfer outward internal information.