D-LINK DSL-2750U modem router Configuration as a router, secure the wifi, change admin password and port forwarding

Configuration procedure, step by step, by video in less than 4 minutes, of the modem  D-LINK DSL 2750U as a Router, how to secure the wireless, change the administration password and how to configure the ports for the application servers (port forwarding)...

Wireless N 300 ADSL2+ Modem Router DSL-2750U:

Latest ADSL2/2+ standards provide internet transmission of up to 24 Mbps downstream, 1 Mbps upstream.
Compatible with older 802.11g/b devices.
Switchable WAN/LAN Port.
USB 2.0 port for connecting a 3G USB modem.

Reliable Wireless Connection:

The DSL-2750U Wireless N 300 ADSL2+ Modem Router is a versatile, high-performance router for home and the small office.
With integrated ADSL2/2+ supporting download speeds up to 24 Mbps, firewall protection, Quality of Service (QoS), 802.11n wireless LAN, and 4 Ethernet switch ports, this router provides all the functions that a home or small office needs to establish a secure and high-speed link to the internet.

Enhanced Features:

The Wireless N 300 ADSL2+ Modem Router offers Quality of Service (QoS), which allows priority queues to enable a group of home or office users to experience a smooth network connection without worrying about traffic congestion. Virtual server allows users to forward ports for remote access.
In addition, it includes four Ethernet ports for connecting PCs and other devices, making the DSL-2750U a versatile and fast Wi-Fi router.