The NETGEAR Nighthawk is a router, and you’ll need to use a modem with the router to get the network up and running. And it works with nearly any modem. This guide will be beneficial if you read it correctly and follow the steps accordingly. To change the Netgear password, launch a web browser. Then enter www.routerlogin.net. After that, enter your user name and password for the netgear nighthawk modem. Then select ADVANCED. Go to Administration and tap on Set Password. After that, type your current password and type the new password two times to change your password.