Architecture for Secure SCADA and Distributed Control System Networks: Comprehensive Network-Based Security for Control Systems
Source: Juniper Networks
The need for remote monitoring, control, maintenance, and data access have resulted in many Supervisory Control and Data Acquisition (SCADA) systems and Distributed Control Systems (DCS) to be accessible either directly from the Internet or through corporate networks. Contrary to popular belief, many modern industrial control systems use common operating systems, protocols and networking stacks, making them vulnerable to worms, viruses, and application level attacks that proliferate on the Internet. Such systems have weak authentication and security mechanisms, but are typically built with several fail-safes designed to minimize the chance of loss or injury.