A traditional firewall is able to control the traffic at the point of entry or exit within the network.
In other words, it’s the drawbridge between your own business and the ‘great unwashed’ of the rest of the internet. This was perfect for those simple times – back when you used to be able to see everything that was latching onto your network.
Now, businesses are increasingly playing host to a myriad of unknown devices, and a deep dark sea of cloud applications which are downloaded by employees.
The main difference with a next generation firewall is that you can set application controls and policies.