The Triconex/Tofino OPC firewall strengthens industrial safety sys--tems against network accidents and attacks. It combines content-inspection firewall technology from Byres Security and the security hardware development of MTL Instruments with the OPC communications servers of Invensys. The system automatically mitigates risks related to known distributed component object model (DCOM) vulnerabilities. Its dynamic port management and built-in traffic-rate controls prevent basic network problems from spreading throughout a plant. It provides tighter integration of safety and asset management systems to share data and prevent trips. Placing the firewall in front of the Triconex OPC server thwarts attacks and traffic storms before they reach the safety and critical control system.
