From Castle-And-Moat To Zero Trust: Towards a SASE future
The Internet was created in the 1970s, and few could have predicted the impact it has had on our lives. In just half a century, it has changed virtually every aspect of the way we live our lives, and few can avoid it. Without it, we would struggle to run our societies. Our banks, transport networks, media, health care, and governmental infrastructures are all now typically built around the Internet and the public Cloud. Increasingly, too, security, integrity and resilience play a core part of these infrastructures, and in a way that was never really thought about when we created the protocols that run the Internet. The hotch-potch of different protocols, services and data infrastructures has made it increasingly difficult to manage our corporate infrastructures.
And, the creation of the Internet was not a top-down approach to its design — it was very much a bottom-up approach. It all happened through LANs (Local Area Networks), and where we connected to local networks and ran local applications. The administration of services on these separate LANs became difficult, and so we centralised the services onto servers and which served multiple LANs. For this, we need gateways between the LANs. The security of interLAN access was then governed through these gateways.
