"Without warning, I will attack you. In this way, I will keep you vigilant and alert." - Inspector Jacques Clouseau.
If being part detective is in your (or your customer's) IT job description, here's some good news.
Fluke Networks has a FREE Whitepaper to help you discover how you can secure your wireless LAN from unauthorized users by quickly identifying and locating rogue wireless access points.
The EtherScope II Network Assistant measures health of the 802.11 a/b/g WLAN and provides analysis on Gig twisted pair/fiber optic LAN.
Interlink VARs can contact your Account Manager for more information about the EtherScope II Network Assistant.