Protecting sensitive data infrastructures such as airport IP surveillance networks, border control network databases, Social Security databases and other important infrastructures, is a major concern in view of existing terror threats and criminal activity.A secure network connected to external sources, including IP-based surveillance sensors, can never be completely secure. Security breaches due to hacking always remain a risk. Non-segregated networks are exposed to threats of terrorist and criminal on-line attacks.Waterfall’s solution is the combination of a tamper-proof hardware core, a fiber optic link, and an underlying proprietary transfer protocol. This provides users with a unique, unparalleled level of security that completely eliminates the threat of on-line attacks and data leakage. This solution provides a safe connection between the secure network and external sources, whether data networks or IP-based surveillance sensors.The Waterfall One-Way® system is also coupled with a powerful content filtering plug-in that deals with additional threats of malicious code.