Systems and methods are presented for achieving various operational modes of packetized wireless network communication, specifically IEEE 802.11 Wireless LAN (WLAN), 802.16 Wireless MAN and WiMAX communication. By providing for various operational modes an increase in the overall security of the wireless network can be realized. The invention is based on the application of a single cryptosystem and on the application of multiple cryptosystems. The invention addresses to aspects of WLAN security, namely, the protection of the information transmitted through the radio link of WLANs, and the invisibility of the network equipment, such as Access Points (APs), to unauthorized adapters.