Since wireless network technology has advanced swiftly and dropped in price, it became a widely used networking option among numerous organizations and even single home users. In spite of their widespread usage by private sector, wireless networks are still undesired alternative for the governments due to security concerns. Although wireless networks possessed lots of proven and documented security flaws at first, with the latest researches and developments this condition ameliorated by the time and wireless networks became much more robust to various security attacks. In this thesis, a secure wireless network architecture that will allow exchange of unclassified information, using 802.11 (Wi-fi) and 802.16 (WIMAX), will be proposed that co...