17D-Link DIR-803 User Manual
Section 3 - Conguration
If the router detected or you selected Static, enter the IP and DNS 
settings supplied by your ISP. Click Next to continue. 
For both the 2.4GHz and 5GHz segments, create a wireless network 
name (SSID) using up to 32 characters.
Create a wireless security passphrase or key (between 8-63 characters).  
Your wireless clients will need to have this passphrase or key entered 
to be able to connect to your wireless network.
Click Next to continue.
In order to secure your router, enter a new Password. Check the 
Enable Graphical Authentication box if you want to enable CAPTCHA 
authentication for added security. Click Next to continue.