Wi-Fi misuse, abuse, or attack can cause financial harm, including direct costs associated with investigation, response, down-time, and recovery; indirect losses due to decline in competitiveness and market value; and directed remedies and penalties caused by non-compliance with data privacy regulations. An effective network defense requires the ability to control all wireless activity that impacts your business. This paper details the five essential steps to securing an enterprise wireless LAN (WLAN). From safeguarding wireless clients and data to auditing and controlling Wi-Fi connections, this paper recommends best practices to ensure the safety and integrity of enterprise networks.