Hi,
You can access the router through web interface and configure it. The default username is admin and leave the the password field blank - Don't type anything - and Click Login). All you have to do is connect the router to the DSL Modem through LAN cable (or wirelessly) and make configure the router according to the needs and ISP. To secure the connection follow the following steps: -
First you have to access the router through web browser (Internet Explorer) by typing the IP address of your router in the address bar, which is 192.168.0.1 (written at the back of router) and lookup for the options to do the following: -
1. Change the SSID (Name) of the router
2. Change the default administrative user name and password (unless you've configured otherwise, the default username is admin and leave the the password field blank - Don't type anything)
(The above step would prevent unauthorized access to your router)

Next step is to secure it:
1.On the left-hand side, under Setup, click "Wireless Settings" 2.Under "Security Options", select your desired encryption method (preferably WPA2-PSK)
3.Choose a Network Key - it can be anything, as long as it's 8-63 characters in length
4. Click Apply

Now your router and your connection would become secure and the user has to provide the network key to access the internet.



You may refer to Product Manual (Page47 onwards for security settings)

Feel free to contact me for further assistance
Hope it helps! Good Luck! Thanks for using Fixya!
CreativeTECH