1746-OBP8
1746-OBP8
1746-OBP8
在生产控制网络内布署工业漏洞扫描系统，定期对工业网络设备、系统及PLC等控制设备进行安全检测，让安全管理人员及时了解工业网络安全和运行的应用服务情况，及时发现安全漏洞，更新漏洞补丁，避免因此而带来的风险威胁。目前网络边界防御中最普遍应用的安全技术是通用防火墙。通用防火墙是在网络层对数据包作安全检查，并不切断网络连接，很多案例证明无论包过滤、状态检测还是代理防火墙技术都很难防止木马病毒的入侵内部网络。Nimda绕过很多防火墙的检查并在全世界肆虐就是一个很好的例证。通常见到的木马大部分是基于TCP的，木马的客户端和服务器端需要建立连接，而PSL工业隔离网关从原理实现上就切断所有的T CP、UDP、ICMP等通用协议链接，使得蠕虫病毒和木马无法通过工业安全隔离网关进行通讯，从而可以防止已知和未知的木马攻击。 本方案中采用的力控华康PSL安全工业隔离网关内部特殊的2+1的双独立主机架构，控制端接入工业控制网络，通过采集接口完成各子系统数据的采集；信息接入到企业管理网络，完成数据到调度中心的传输。双主机之间通过专有的PSL网络隔离传输技术，截断TCP连接，彻底割断穿透性的TCP连接。PSL的物理层采用专用隔离硬件，链路层和应用层采用私有通信协议，数据流采用128位以上加密方式传输，更加充分保障数据安全。PSL技术实现了数据完全自我定义、自我解析、自我审查，传输机制具有彻底不可攻击性，从根本上杜绝了非法数据的通过，确保子系统控制系统不会受到攻击、侵入及病毒感染。
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