Web GUI or management page allows a user to change default router settings such as SSID (WiFi name), router password, create guest networks. Router manufacturers typically assign a different router default password which you may usually find at the back of your router or on the guideline book you may have received with your modem. However if you are unable to find it, here we have list of default router passwords and IP addresses.
We have mentioned the login credentials which are commonly used however your router password and IP may vary, learn how to find router IP address. If you have previously set a password then these logins will not work you need to login via what you have entered in previous settings. If you forgot the password, you may perform a factory reset which will revert back all manual changes you may have made earlier and reset to the default settings.