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GreyBox: Emulate the Internet for Offline Cybersecurity Training

Fact Sheet
This fact sheet explains the main features of GreyBox, a software tool developed by the SEI that gives cyber-exercise participants the perception that they are connected to the real Internet in disconnected training environments.

Software Engineering Institute



GreyBox is an open source tool developed by the SEI to give cyber-exercise participants the look and feel of the real Internet in training and exercise environments that are disconnected from real networks for security purposes. By providing a realistic Internet, participants in the exercise feel like they are engaged with real-world problems without the risk of connecting to a live system. Learn more about the features of GreyBox in this fact sheet.