Security News > 2020 > June > Why traditional network perimeter security no longer protects

Defining perimeters made sense in the early days of network security and aligned with the basic principle of defense-in-depth - protect internal resources from external forces.

While traditional perimeter security was clunky, by and large it worked, despite chokepoints that became flypaper for middleware appliances, which used largely static security policies.

Reality demands that enterprises rethink perimeter security because employees and their laptops and smartphones and other devices are now literally all over the place, shifting the network perimeter to wherever a user is located.

The network security paradigm that is designed to meet the dynamics of a mobile workforce is a perimeter-less network, or zero trust architecture.

To trust is human and develops at infancy, so when humans first designed network security, it made sense that they would draw on relationships of trust to create a perimeter that created a big zone where everyone and everything were trusted and had access to each other.

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