Yes, all the ports a freely accessible. And you may have an acces to the ports all night long. Or you may establish connection secretly and connect later. Or you may connect to the ATM throught the intranet of the organization where it is standing. Organization is public, and anybody could access it at the daytime and even there are possibilities to access it at night. Even if we talk about security personnel and surveillance cameras - there are ways to avoid them. For example, at that moment there are some repair works in the building and guys are working at daytime and, sometimes, at night. And there are a lot of stuff like boxes an so on standing around the building, so nobody could pay attention to another one or notice another one worker. Had no time to take pictures this week. Maybe tomorrow...(will post with an ATM model).