D-Link DIR-655 User Manual page 20

Section 3 - Configuration
For both the 2.4GHz and 5GHz segments, create a wireless network a 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, please enter a new password. Check the Enable
Graphical Authentication box to enable CAPTCHA authentication for added security.
Click Next to continue.
Select your time zone from the drop-down menu and click Next to continue.
D-Link DIR-655 User Manual 16