This chapter describes the commonly used methods of access point configuration for Wireless local area networks (WLAN). It shows that access points (AP) for setting up an infrastructure WLAN. The chapter considers an 802.11g infrastructure network to study the effect of AP configuration and placement on system performance. It provides some insights into 802.11g link throughput under various AP configurations and placements in a typical indoor environment without using any complex mathematical modeling or radio channel characterization. The following four AP configuration scenarios are considered in this study: AP mode, wireless distribution system (WDS) mode, WDS with AP mode, and AP mode with Ethernet connection. The throughput measurements of the 802.11g AP were conducted in the staff meeting room located on the first floor of the Duthie Whyte building at Auckland University of Technology. The chapter argues that APs to optimize WLAN performance. It also provides propagation measurements to study the effect of AP configuration and placement on WLAN performance.