When it comes to network security, the definition of those responsibilities has greatly evolved, just as the capabilities of networking have evolved. Think of the past environments you have worked in, going back as far as your token ring or dial-up days. Then fast forward to modern data centers, littered with fiber connections and traffic traveling at the speed of light. The one thing everyone can agree on is that networking as a whole has come a long way and, accordingly, so has security.
In the past, network security was basic in that devices and systems had user names and passwords, or even just a password. Later on, encryption was introduced to prevent data being sent in a clear text format. Now, more modern security includes specialized firewalls, 15-digit passwords with special characters, and multi-factor authentication (MFA).
Modern times call for modern forms of security and that’s exactly what we have seen. That shouldn’t be a shock to anyone. Take firewalls for example. Firewalls are great for protection at the edge, but the old way of thinking around “protecting the front-door” is long gone.
Securing the Edge is No Longer EnoughThe fact is that securing the edge is no longer enough. Security must be the focus inside and outside of your organization. Malware and other attacks can be sourced from the Internet, a rogue employee with a USB drive, or an insecure wireless network, to name a few common methods.
There is an image I saw on Aruba’s website describing this challenge of security as a puzzle. It’s a very accurate representation of the challenge we now deal with for network security, because of all of the methods and systems that are now in play. The image I am referencing is below and shows a possible …

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