The password for the router administrator is used to avoid unauthorized individuals from accessing your router's web-based setup page and altering any of its environments. Changing the password of the administrator is suggested to prevent unwanted access.
Changing the administrator password or Change D-Link Wireless Password
Step 1: Access the web-based configuration page for the router. To do this, open a web browser and click [ Enter ] to enter the router's IP address on the Address bar.
Step 2: Ask for your User Name and Password for a prompt.To access the web-based setup page of your router, enter your login credentials.
Step 3: Click on the Admin tab. Enter the fresh password for confirming areas in both the Router Password and Re-enter.
Step 4: Click Save Settings on the next page and click Continue.