D-Link DIR-3040 - Firewall Settings - Advanced; DMZ and SPI Configuration; Anti-spoofing and IPv6 Security

64D-Link DIR-3040 User Manual
Section 3 - Conguration
Wi-Fi Protected Setup
The easiest way to connect your wireless devices to the router is with Wi-Fi Protected Setup (WPS).
WPS-PBC Status Enable or disable WPS-PBC (Push Button Configuration)
functionality.