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大家好,我是时间财富网智能客服时间君,上述问题将由我为大家进行解答。
网络安全的第一道防线是防火墙;最后一道是数据备份。防火墙是一种位于内部网络与外部网络之间的网络安全系统。一项信息安全的防护系统,依照特定的规则,允许或是限制传输的数据通过。
网络安全(Network
Security)包含网络设备安全、网络信息安全、网络软件安全,是指网络系统的硬件、软件及其系统中的数据受到保护,不因偶然的或者恶意的原因而遭受到破坏、更改、泄露,系统连续可靠正常地运行,网络服务不中断。具有保密性、完整性、可用性、可控性、可审查性的特性。
随着计算机技术的迅速发展,在计算机上处理的业务也由基于单机的数学运算、文件处理,基于简单连接的
内部网络的内部业务处理、办公自动化等发展到基于复杂的内部网(Intranet)、企业 外部网(Extranet)、全球互联网(
Internet)的企业级计算机处理系统和 世界范围内的信息共享和业务处理。
在系统处理能力提高的同时,系统的连接能力也在不断的提高。但在连接能力信息、流通能力提高的同时,基于网络连接的安全问题也日益突出,整体的网络安全主要表现在以下几个方面:网络的物理安全、网络
拓扑结构安全、网络系统安全、应用系统安全和 网络管理的安全等。