192.168.1.1 is a default IP address used by several brands of routers. Several popular brands which use this IP address as default are Netgear, Linksys and TP-Link. It is quite useful to know this IP address and also 192.168.0.1 which is also default IP address for several routers.
Typing these addresses in your browser address bar will bring you to router administrative interfaces allowing to make modifications to your network. If you don't see administration user interface on these addresses then most probably your router is not configured correctly or it is using IP address different from 192.168.1.1 and 192.168.0.1. Information on how to find out IP address of your router could be found on this website.
Detecting common router problems
Perform following actions to check if your router or modem is functioning properly.
- Check if internet light is blinking or constantly on. Each router and modem has internet connection indicator on it. Usually this icon looks like a small image of earth. If this light is off then your router is not connected to the internet. Problem like this should be solved from the router administration interface (which is accessible through either http://192.168.1.1 or http://192.168.0.1/ depending on your router brand).
- Check if your DSL/Cable connection light on your modem is blinking or constantly on. If this light is off it may indicate that your connection to internet provider is not working and you need to contact them to resolve this issue. Read more about 192.168.o.1
- If your computer is connected using Wi-Fi and internet is not accessible try to connect using ethernet cable. If ethernet connection is working but Wi-Fi is not then the problem is in WLAN configuration in your router/modem.