Abstract: An access point comprises a transceiver unit for normal access point function and a receiver unit to scan all channels for monitoring illegal wireless communications such as intruder and abnormal traffic. A buffer is provided in the access point to store the scanned packets from the monitoring receiver unit for an algorithm to screen the scanned packets under a user-defined configuration. The access point will automatically notify the user of the detected illegal wireless communications by blinking LED, buzzer, email alert or phone alert. The configuration includes identification of specific wireless devices and traffic or communication conditions and is updated to optimize the performance of the access point.