Face it, you've already been de-perimeterized. The question now is, what are you going to do about it?

As organizations have opened their networks to business partners, customers and suppliers, they find that perimeter safeguards such as firewalls are opening as well. Then there's the increasing mobility of so-called internal users, who connect to corporate resources via external wired and wireless links. Organizations still have perimeter firewalls in place, but they're now shot so full of holes that they barely provide any protection at all.

By Joanne Cummings at Network World Fusion.

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