Uhmm, yes??

Please explain more, are you looking to hide your local ip? What's this box you are talking about.

ok, the situation is like this, I have cracked several routers in different places, just so that I have internet connection whenever I go to those spots, coz i don't have a post paid mobile subscription plan....I have a feeling that I might get busted one day, if one of the router owner found out that there's someone connected to their router, and I think the the mac addresses of the computers that are connected to a router are being displayed in the router administration control panel right ?.....so my question is, how will I hide my identity whenever I'm connected to any of the routers that I cracked ? ...am using an ubuntu 11.04 OS