WLAN is very convenient for users. it is usually less trouble and cost to deploy (because there are no wires to buy and install); and as the technology improves, the speeds attainable are pretty respectable, even in today's bandwidth-hungry world. For this reason WLAN technology has rapid grown in the past few years.

In this section we will introduces Wireless LAN (WLAN) technology. We will discuss the standards associated with WLANs, how WLANs are deployed and the basics of how they operate, security threats specific to WLANs and measures to mitigate them, and the essential steps to connect and configure an access point (AP) and a client.