钢铁行业工业以太网一般采用环网结构,为实时控制网,负责控制器、操作站及工程师站之间过程控制数据实时通讯网络,网络上所有操作站、数采机及PLC都使用以太网接口并设置为同一网段IP地址,网络中远距离传输介质为光缆,本地传输介质为网线(如PLC与操作站之间)。生产监控主机利用双网卡结构与管理网相连。目前的系统存在以下信息安全隐患:
1、整个网络均采用同一网段的以太网通讯连接,任何连接到网络内的PC或操作站都能访问网络中所有的PLC,对PLC进行操作甚至破坏PLC的组态程序,直接造成PLC的控制单元失灵或是现场设备停机或损毁
2、IP地址可以随意分配,一旦发生地址冲突,就会造成设备停机
3、网络中无任何隔离防护设备,如果主控楼操作站感染病毒,病毒将会轻易蔓延至整个网络,可能会导致整个网络数据堵塞或操作站丧失操作能力,某些针对工业协议(如Modbus TCP)的病毒还可能会导致PLC控制单元死机,完全丧失控制能力
4、网络中无安全监控平台,无法对网络安全事故进行预警和分析,网络工程师将无法以快的速度判断问题所在,也就无法迅速准确的做出防护和修复措施。
	
	
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l Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数据通信及处理等。
l Invensys Triconex: 3700A/3805E/3604E/3503E/3504E/3008/4119A/8312/3703E/3511/冗余容错控制系统、基于三重模件冗余(TMR)结构的现代化的容错控制器。
l Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、Logix5000/1756、PLC-5/1771/1785等。
l Schneider Modicon(施耐德莫迪康):Quantum 140系列处理器、控制卡、电源模块等。
l ABB:工业机器人备件DSQC系列等。
l Siemens(西门子):Siemens MOORE, Siemens Simatic C1,Siemens数控系统等。
l Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
l XYCOM:I/O 、VME板和处理器等。
l GE FANUC(GE发那科):IC693/IC697/IS200/DS200模块、卡件、驱动器等各类备件。
l Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
l Woodward(伍德沃德):SPC阀位控制器、PEAK150数字控制器。
		
		
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			AI-00-08 FAI-00-08 T/C Millivolt Input Module ABB 
		
		
			AI-00-16 FAI0016 T/C Millivolt Input Module ABB 
		
		
			AI-15-08 AI1508 Analog Input Module ABB 
		
		
			AO-420-08 Analog Output Module ABB 
		
		
			AO-420-16 FAO-420-16 Analog Output Module ABB 
		
		
			DI-24-16 DI2416 Digital Input Module ABB 
		
		
			FAO42016 AO42016 AO42016 Analog Output Module Bailey 
		
		
			FDI-115-16 DI11516 Digital Input Module Bailey