When designing wireless networks you need to build your security measures in overlapping rings, like the concentric defence of a medieval castle. Should one security measure be proven weak or flawed, several other layers of your defensive strategy should still offer protection to your network. The overall goal is to ensure that no single failure can cause a collapse of all your defences.
Business level wireless networks require complex and painstaking research and evaluation. Due to the number of points of difference between any two business networks, few ready made “one size fits all” solutions exist today. However many wireless vendors tend to market their solutions in this manner.
If you are familiar with securing your home wireless installation you will discover some of the security mechanisms you are accustomed to in small scale wireless networks do not scale effectively to a business.