How to meld good security with hybrid wireless network

Meshing various wireless devices and applications supported by various protocols can be a security nightmare, but there are some avenues you can pursue as long as you understand the limitations of the many wireless specs and standards. The easiest and best security approach is using standard devices that support all the 802.11i-standard Wireless Protected Access-2 (WPA2) capabilities in access points (AP). But that is often not available for today's enterprises, which typically boast devices tied to different specs--such as WPA Wired Equivalent Privacy (WEP). The best strategy, in that scenario, is to build separate security networks. Yet remember that client devices must find a protocol match on the APs to which they associate. So, in effect, WEP has to talk to WEP; it can't talk to WPA or WPA2. By developing separate networks, such as a WEP network, a WPA network and a WPA2 network, you separate out data and voice, which could boost stability as well. Article