I want this to be part of a Hollywood movie. The protagonist is using his makeshift wifi setup to hack into a bank computer systems 43Km away from his location, and the bank people has no idea what is going on.
Why? Im not interested to answer why our router is not capable of that, and there is no such router in the market.
But on a serious note, some enterprise networks are unsecured enough, that you could probably login to root of their server from anywhere in the world.
Uhh, maybe a believable plotline like "Because the protagonist lives on a crumbling bridge with a military-trained dolphin encircled by cyborg psychopaths and Japanese megacorp military types while a highly infectious disease ravages remnant humanity and it's the end of the world?" https://www.imdb.com/title/tt0113481/
Hah! I only just watched that again a couple of weeks ago. With every re-watch I'm reminded of how terrible that movie is, and with all the passing of time between re-watches my memory of it continues to improve it until it seems worthy of another re-watch, and then I'm disappointed again.