I try to RD my server from outside of my office by using DDNS service. The router that i use is Dlink DIR-655 model, i have already set port forwarding that is port 3389 to my IP server but when i checked the port at
www.canyouseeme.org the result shown that; it could see the service on IP on port(3389). So how should i set up the router to make the web checking see the port?
Thank you in advance for the answering
http://www.dlink.com/us/en/home-solutions/connect/routers/-/media/Consumer_Products/DIR/DIR%20655/Manuels/DIR655B1manual070312v23pdf.pdf
Look at port forwarding section