I have a D-link DSL-2740B. Now i am not anymore using ADSL as we got fiber and 100/10 net on that. The D-link is replaced by a Inteno with fiber connection, wlan and 4x ethernet. . As i need more ethernet lines and hope to use a faster n-type WLAN as the D-link had, i wonder if it is possible to configure the DSL-2740B to act as a switch and wlan station if i connect one of the ethernets to the Inteno box? If that is possible can i use the firewall or nat features of the D-link?