Identity is the New Perimeter
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It was Bill Gates who said that security should be based on "policy, not topology". It's a phrase which always stuck with me. Rather than basing security on where something is, you use a policy which is independent of the network.
Identity is a key part of security policies. We make decisions on who the user is, where they have logged in (their identity provider), and their attributes.
I've put this into a diagram below. On the left, you see the old security perimeter, with "good guys inside, bad guys outside". On the right, you see the the new architecture, where an organization has mobile workers, and employees who expect to use Cloud-based services like SalesForce.com just the same on-premises apps.
In the architecture on the right, security is based on identity, not on the perimeter.
APIs are key, both for the mobile and Cloud cases.
For mobile apps, it's important to provide the mobile backend which is the API layer that links mobile apps back into internal systems. A mobile backend exposes APIs which are consumed by mobile apps. It is at the mobile backend that rules based on identity and data validation are applied, as well as where the audit trail is written. Identity standards such as OAuth allow identity to be brought to bear for mobile users.
Published at DZone with permission of Mark O'Neill, DZone MVB. See the original article here.
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