One of the main reasons I bought the SX41 was to restrict my sons internet access to reasonable hours. To enforce this I have blocked his access (another problem there!) using the MAC address of his PC. However, I noticed he was getting around this. It seems the router does not always require a login/password to access it. If I have been connected to it, and close the page, you can access it again without a password. Just put the address in the browser and there it is! Absolutely no security. I can find no settings for this. Any help would be appreciated!