search menu icon-carat-right cmu-wordmark

GreyBox Software and Supporting Materials

GreyBox is a software tool that gives cyber-exercise participants the perception that they are connected to the real Internet in disconnected training environments. Learn more about GreyBox or download it in this collection.

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. Find more information about GreyBox or access the tool in this collection.

Collection Items