Wireless local area networks (wireless LANs, or WLANs) are metamorphosing the landscape of computer networking. The use of mobile computing devices, such as laptops and personal digital assistants, coupled with the demand for continual network connections without having to \"Plug in,\" are driving the adoption of enterprise WLANs. Network managers are using WLANs to facilitate network moves, add-ons and changes. In addition, the inherent flexibility of WLANs overcomes limitations created by older buildings, leased spaces, or temporary work areas. This paper not only furnishes the details about Wireless LANs but also bestows an abundant number of methods in which the security of these WLANs can be breached.