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Network security devices are becoming more sophisticated and so are the testing processes. Traditional network testbeds face challenges in terms of fidelity, scalability and complexity of security features. In this paper we propose a new methodology of testing security devices using network virtualization techniques, and present an integrated solution, including network emulation, test case specification and automated test execution. Our hybrid network emulation scheme provides high fidelity by host virtualization and scalability by lightweight protocol stack emulation. We also develop an intermediate level test case description language that is suitable for security tests at various network protocol layers and that can be executed automatically on the emulated network. The methodology presented in this paper has been implemented and integrated into a security infrastructure testing system for US Department of Defense and we report the experimental results.

VCSTC: Virtual Cyber Security Testing Capability – An Application Oriented Paradigm for Network Infrastructure Protection