It can get pretty annoying when you have multiple wireless routers that all authenticate to a different router 192.168.0.l. For example, if you have two wireless routers, one at work and one at home, and each of your wireless routers connects to the same SSID for the network, then when you log in on your laptop to connect to the network you see the following:
Configuring Your Wireless Network for Free (or Paid) Wireless Networks
If you have entered a user name and password on your network settings, and you want to change it to something else, then the next time you log in, your username and password are changed to something else, and now you have to enter a new user name and password to login again. In order to prevent this from happening, there is a setting on your router (you can usually find this in the Networking and Security tab on your router’s properties page) that allows you to specify your login name and password by IP address. To specify this, log into your router’s administration page, and go to Administration > General. Once there, you’ll see a section for “Usr Hosts”, click on the IP-based username and password option, and fill in the details.
Setting up a wifi router that has this feature also allows you to change your LAN settings from anywhere in the house to anywhere in the world! Simply set up your laptop as a WAN router, and connect to it via a hotspot (a computer that has an internet connection). Then move your mouse to anywhere within range of your router (the main display area should be enough to show you everything, but you should be able to view the Wireless icon in the task bar). From there, you can click the LAN button, and you should see a new entry in the Access Control panel to set the permissions for your LAN. You can change these permissions to suit your needs – whether you want to allow just anyone who has an appropriate password to access your wireless LAN, or you want to create a password system so that any person trying to connect to your LAN will have to use a user name and password that you created.