The problem is that after power outage the router sometimes loses its configuration. Is there a way to store settings so they will survive any power outage? Or do you know any routers that by default have Wi-Fi disabled and don't allow connections to its administration panel (unless you e.g. physically push some button).
closed as off topic by Khaled, Ward, Michael Hampton♦, Scott Pack, HopelessN00b Sep 25 '12 at 11:47
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Wireless is disabled by default on any router that doesn't include wireless functionality ;-)
I think you could probably achieve this using open source firmware on the router. Here's a couple of examples that will work on quite a few Linksys routers:
You should be able to edit the defaults in the config file in the source code, then recompile and apply to your router.
I'm betting that you're using off the shelf consumer grade routers?
That's basically your problem - they're not designed for it. I don't know of any wireless router that would have wireless disabled by default- it sounds like you need a wired router..