期刊名称：International Journal of Computer Trends and Technology
电子版ISSN：2231-2803
出版年度：2017
卷号：54
期号：1
页码：56-62
DOI：10.14445/22312803/IJCTT-V54P110
出版社：Seventh Sense Research Group
摘要：The function of the Supervisory Control and Data Acquisition (SCADA) System is to monitor and control physical processes in real time in a geographically spread environment. SCADA system is applied in supervision and control of devices action in electricity distribution, transmission; oil and gas pipelines, water distribution, and traffic lights among other critical infrastructure. Deregulation of electricity sector in Nigeria provides private independent power producers’ access to the Transmission Company of Nigeria network and hence transforms the closed (isolated) SCADA System of the TCN to an open architecture SCADA System. An open architecture SCADA System is susceptible to threats and attacks within and without with catastrophic impact on the efficiency of the critical infrastructure it is designed to monitor and control. Using empirical method, the type of threats and level of exposure of the TCN SCADA System were examined. The investigation revealed that TCN SCADA System is majorly protected against internal threats. Hence security enhancement through Defenseindepth strategies that would provide wide arrays of security were proposed and briefly elaborated on for successful implementation.
关键词：Defense-in-depth; Firewalls; Intrusion Detection System (IDS); Policy and Procedures; Remote Terminal Units (RTU); Risk Assessments; Security Zones; SCADA; Threats and Vulnerability.
