|We need to know your router make and model number. |
However, you can access router settings from your browser (IE, Firefox, Chrome or whatever). It is an IP address and will look something like this 192.168.1.1 (although the figures will probably be different). To get in there you have to type a Username and Password. If these have not been set, then look in your router info for the default settings - often something like "Admin" with a blank password.
The password above is for router settings access and is not the one you are seeking. Once you get into the router settings look for "passphrase" or "pass key" (the former being the correct terminology). When you find it you input your current passphrase and then replace it with whatever you require. You will then also have to change that on all devices that use it.
If your security is high enough, WPA2 for example, then others shouldn't be accessing it unless they are very well versed in this sort of thing. What evidence do you have which makes you feel this is happening?
Sometimes sharing the same channel with your nearest neighbour can slow things down (if that is the issue). Channels 1, 6 and 11 are usually selected to minimise overlaps. Routers by default just select channels automatically but that does not mean that they necessarily chose the best one. There is a lot to be said for manually selecting one where others using it show weak signals. Unfortunately Windows does not provide any indication of what channels are being use and by whom. There a little freebie programs that do this - here is one:
It also shows signal strengths on the same page and can be run from a shortcut rather than continuously in the background.
Always pop back and let us know the outcome - thanks
message edited by Derek