Please launch your browser and enter http://dlinkrouter.local or http://192.168.0.1 into the address bar. Then login and follow the steps below:
Step 1: Click Management -> System Admin
/FAQs/UK/DIR/DIR878/DIR_878_FAQ_Image020

Step 2: Click Advanced Settings, and enable Remote Management, then click Save. The default remote management port: 8080.


Note: To access your router remotely, from a web browser enter: http://<your WAN IP>:8080.
e.g. http://172.17.2.74:8080
 
You can find your WAN IP by clicking on the Home tab. It will be displayed under the Internet Section