D-Link DIR-412 User Manual page 74

Section 4 - Security
Enter the SSID (Service Set Identifier). The SSID is the name of your
wireless network. Create a name using up to 32 characters. The SSID
is case-sensitive.
If you would like the router to automatically assign a network key to
your network, click the Automatically assign a network key radio
button.
Click Next to continue.
Alternatively, click the Manually assign a network key radio button
to create your own network key.
Click Next to continue.
The following window appears if you selected the option to manually
create your own network key.
Type a password that you would like to use for wireless security in
the Wireless Security Password field.
Click Next to continue.
D-Link DIR-412 User Manual 70