Limiting RF signal reception outside of a perimeter boundary to enhance
security in a wireless network. A central jamming controller (CJC)
communicates with one or more access points within a wireless network to
determine if link activity is present within a cell controlled by a
specific access point. Link activity comprises transmissions from an
authorized communication device (ACD) to the access point and
transmissions from the access point to the ACD. When link activity is
detected, the CJC directs a jamming antenna system to produce a jamming
signal and to transmit the jamming signal outside of the perimeter
boundary defined by the WLAN. The jamming signal comprises noise
transmitted within the bandwidth of the channel being used by the access
point and the ACD to communicate within the cell. An unauthorized
communication device (UCD) outside of the perimeter boundary will be
prevented from receiving the communication between the access point and
the ACD because of the jamming signal.