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Another question asked is is open flow secure is software defined networking secure.

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Well I'm pretty sure most of you have heard of the NSA or National Security Agency of the USA.

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Here's a presentation on YouTube explaining how open flow is used in the NSA.

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The NSA have the same I.T. challenges as other organizations.

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They need bigger faster better networks but they need it on a smaller budget they decided that centralization

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via open flow is key to their deployment.

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The reason for the NSA to implement open flow is control.

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They require predictability and efficiency to make the network more secure but also need to support

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mission critical workloads that run over the network.

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So in this presentation it's mentioned that the NSA are all in too open flow and using open flow with

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a centralized controller is the only viable way that the NSA could technically implement their requirements.

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They needed to simplify the network but have more control and centralized control using open flow was

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the solution.

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This presentation further goes into how it makes sense to have centralized control.

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As an example in a corporate network you know where your DHB servers are.

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So it makes sense to only allow DHS GOP requests to go to those servers there should be no need for

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dynamic learning as the network is predictable and deterministic.

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The NSA is deploying open flow in their data centers campus and branch offices this video contains information

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from the NSA data bank.

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Samsung sd s and Credit Suisse.

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It's well worth watching this video as well because it very quickly gives you a sense of some of the

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challenges that enterprises face and some of the solutions that centralized control using open flow

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provide.