US Patent 8438619 Network access control

An system for controlling access to a network by a user device. The system includes a criteria engine that generates a plurality of criteria to be monitored on the user device and a checker that generates at least one check for each of the plurality of criteria. The system further includes a profiler that retrieves a profile for the user device, the profile including the plurality of criteria and the at least one check for each of the plurality of criteria, a comparator that compares a summary of the retrieved profile to a summary of a profile received from the user device and a communicator that communicates a message to the user device based on the comparison.