How can GDC address security issues with DCS and SCADA networks?
GDC products should be part of a comprehensive secure network implementation. Other elements that should be addressed are policies and enforcement, virus detection and prevention, firewalls, and Intrusion Detection Systems (IDS). GDCs line of secure modems and IP access products can be the first line of defense at the most basic levels of your network OSI Layers 1 and 2. As stated earlier, most legacy DCS/SCADA networks have modem access to some controllers (and potentially elsewhere) for remote maintenance and troubleshooting. GDCs family of V.34 modems with Steadfast Security and additionally RADIUS authentication can make these connections hack-proof. GDCs Steadfast Security, which is a proprietary, handshake-based exchange requires a GDC modem at both ends. If the handshake password exchange is not completed properly, the call is dropped before ever being connected to the network. With a common length password of 6-8 alphanumeric, it would be statistically impossible for any hacker
