"Network security consists of the policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources."
For any organization looking to find its spot in today's online world, proper network security will provide a solid foundation to conduct business around the globe. On the contrary, an organization can quickly meet its demise if they cut corners for network security - potentially leading to leaked trade secrets and client data. The first step for many is to find a network firewall - a device that monitors and controls incoming and outgoing network traffic based on a set of rules. But where did this technology begin? What did it evolve into? And who dominates the market today?