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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. This paper proposes a new methodology of testing security devices using network virtualization techniques, and presents an integrated solution, including network emulation, test case specification and automated test execution. The hybrid network emulation scheme provides high fidelity by host virtualization and scalability by lightweight protocol stack emulation.
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