刍议计算机网络安全之防火墙

网络安全已成为人日益关心的问题,而网络防火墙是一种隔离控制技术,通过预定义的安全策略,对内外网通信强制实施访问控制,防火墙较常用的技术有应用网关、状态检测、包过滤等技术。在保护内部网络安全的前提下:其主要作用是在网络入口外检查网络通信,设定用户的安全规则,提供内部网络的安全,保障内外网络通信。

Discussion on Computer Network Security Firewall

Network security has become a man of growing concern to the network firewall is an isolation control technology,through a predefined security policy to enforce access control,internal and external network communication,and more commonly used firewall technology application gateway,stateful inspection,and packet filtering technology.Under the premise of protecting the internal network security:its main role is to check the network traffic in the network outside the entrance,set the user's security rules,internal network security,to protect internal and external network communication.