A system for enforcing configuration requirements for hardware and software on mobile units operating on Wireless Local Area Networks (WLAN). The system allows the configuration policy to change dynamically with the access point or sub-network association. Whenever a mobile unit connects to a new sub-network or access point, the system invokes and then verifies the proper configuration profile for that sub-network or access point. Thus the system ensures the configuration of the mobile unit meets the requirements for the sub-network being used.