But if you *must* have wireless, here’s an article on how to secure it.

“In August, engineers with AirDefense, a wireless LAN security software vendor, made war drives in Atlanta, Chicago and San Francisco, using scanners to find WLAN access points around downtown office buildings.

The drivers discovered more than 1,100 access points. Of these, 57% weren’t using any form of data encryption, although most of the actual data traffic in Chicago and San Francisco was encrypted by other means, such as via VPN. Three-quarters of the access points were broadcasting their Service Set Identifier (SSID), which is like hiding in a game of hide-and-seek while carrying a boom box blaring heavy metal.

The WLAN out of the packing boxes is inherently unsecure. But the final WLAN security system you create will hinge on what data you want to protect, how valuable it is and the level of risk to that data. Good WLAN security is expensive: in time, training, maintenance, oversight and in hardware and software costs.

The following recommendations assume an enterprise WLAN of 150 to 500 access points, up to several hundreds of users and a relatively high requirement for protection.”