1746-OBP16
1746-OBP16
1746-OBP16
前面企业的需求并非个例,化肥企业是典型的资金和技术密集型企业,对信息系统依赖程度很高,生产的连续性很强,装置和设备的意外停产都会导致巨大的经济和财产损失。通过前面对化肥企业网络安全风险的分析,我们总结出化肥企业信息安全建设的需求主要是通过建设具备纵深防御能力的信息安全保障体系,抵御来自内部、外部的入侵和攻击,及时发现病毒、漏洞并抑制病毒在网络间的扩散,尤其要确保工业控制系统的安全,避免因为控制系统被入侵而出现生产事故。 参照ANSI/ISA-99标准,同时结合化肥行业的具体情况,我们将企业系统结构划分成不同的区域,以帮助企业有效地建立“纵深防御”体系: 1.横向分层,将企业的生产网络划分成企ERP、MES、PCS三层网络结构。在MES和PCS间部署了力控华康PSL系列工业隔离网关,主要实现了控制网络的物理隔离,有效屏蔽ERP和MES层面的网络威胁向生产控制系统传导,同时又实现了网络之间安全的数据交换。在管理网络和信息网络之间部署工业防火墙,主要用于弥补传统防火墙的不足,实现对工业协议的安全检测。 2.在生产控制网络层内纵向分区,每个生产区内包含离散控制系统(DCS)、OPC服务器和不同的生产车间。在OPC服务器与DCS控制系统之间采用力控华康ISG工业防火墙进行安全防护,通过对工业协议的深度过滤确保DCS系统及控制设备的安全,并抑制安全威胁在不同生产区之间的扩散。
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Fisher Rosemount Pressure Transmitter 2088 G2A22A1B4
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FISHER ROSEMOUNT TYPE HF240 AI HF200 S DIN RAIC FILTER
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