To get access to your Netgear router, you need the IP of your device, the username, and the password. You will find such information in the Netgear wnr2020 manual of your router. But if you do not have the manual for your router or you do not want to read the whole manual to find the default login information then you can use the quick guide given online. To get to the router login page it's necessary that you are connected to the router.