1746-OB32E
1746-OB32E
1746-OB32E
某生产氮肥的化肥厂,有一个联合控制室,有40多套DCS操作站,负责二期工程的生产控制。为了方便生产调度管理,2005年对全厂的DCS数据进行采集,上传到生产管理部门。由于当时网络威胁不是很严重,一切运行正常。当蠕虫病毒爆发后,这种平静被打破了。 2008年某个普普通通的工作日,当生产紧张而有序地进行着的时候。突然,联合控制室,有1套DCS操作站出现了死机的现象,然后几分钟之内,多个工段的操作站接二连三的出现相同的现象。对于易燃易爆的生产工艺来说,这种DCS失控的状态随时可能引发不可挽回的后果。 幸亏工厂的维护人员经验丰富,马上拔掉的数据采集的网线。然后,同时对每台操作站进行杀毒。成千上万的蠕虫病毒被发现,险情得到了控制。
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需求分析 2008年国内做工业网络安全的公司很少,而力控华康也是刚刚推出第一款pSafetyLink®隔离网关。经过仔细分析,甲方认为力控隔离网关是解决DCS安全问题最有效的方法。于是先上一台看看。由于是第一次应用,隔离网关与DCS OPC Server的通讯会出现中断的现象。力控华康的开发人员经过分析,发现是DCS OPC Server的问题,于是请DCS厂家对OPC Server进行了改进。于是运行稳定了。 直到隔离网关正常运行后,该化肥厂才将生产数据采集调度系统恢复运行。由于该化肥厂还有2个分厂需要解决接入调度系统的安全问题,于是工厂又购买了几台pSafetyLink®隔离网关,并顺利投入运行。
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