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October 2013 Vol. 15 / No. 8

Security: The genesis of SDN

Software-defined networking (SDN) is a rare case of technology led by security—a fact that hasn't received nearly as much attention as it deserves. The genesis of original ideas that led to SDN's creation occurred to Martin Casado, now VMware's chief technology officer of networking and security, just after 9/11 while he was working within the intelligence community on systems in incredibly secure settings. How do you build isolated groups of compute that have their own security policy, which remains invariant independent of where the VMs go? Martin Casado, chief technology officer of networking and security, VMware Casado realized that it was entirely possible to program a computer to deal with security at that level, but the same wasn't remotely true for the network. They were pretty much stuck with whatever networking vendors were selling and there wasn't much they could do to change it. In terms of operationalizing security networks, it was the weakest link. Casado took his ideas about improving enterprise network security ...

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