You have to make sure rename the network, you change the type of security to WPA2 and make a secure but "simple" password. Do not use smileys, or ñ, or any character not accept all your dispisitivos and SS.OO. (Sounds silly but I put a smiley as password and my printer not accepted and every time you turned the printer network desconfiguraba do not know how and I had to reset the router).
A part not forget that the operators as a rule does not like them trasteen with their routers. If you've read on the internet that someone could try, but if you see nothing may well be that you can not and you.