Network security has always been a near-impossible task, but the cloud era is ushering in a fundamentally new model that truly renders network security an oxymoron. How so, you ask?
In the past, organizations built and controlled their own networks. Because IT could control the flow of traffic inbound and outbound, the nodes on the network, and the users, they also controlled the network security architecture. IT was responsible for where and how to place firewalls, VPNs, IDS and IPS, load balancers, web application firewalls, and other security devices. In short, when you owned the network, you also owned securing the network.
Today, with more organizations moving to the cloud, a new approach is necessary. Three fundamental differences are driving this change:
- Cloud providers own the network
- Traffic flows in the cloud much differently. Interdependencies between applications and services, both internal and external, are exploding
- Network security has historically been delivered through appliances