[mothered]

As long as you don't expose your ip and it doesn't get indexed is all good.
In case of trouble, disable access to the admin panel by wifi and plug the router with a cable on eth1.

When i got my first android phone i used to wardrive to get wifi access points.

^ This Is what I'm referring to.

Anyone who knows the manufacturer's default credentials, can simply log In. If you're running a wireless network, always change the default password at the least. It only takes 30 seconds, so there's no excuse to leave It be.