So, do there exist any IP cameras that are simple, secure and don't open a crazy number of ports for bizarre, unnecessary protocols whilst including a steaming

So, do there exist any IP cameras that are simple, secure and don't open a crazy number of ports for bizarre, unnecessary protocols whilst including a steaming pile of PHP (or similar) to provide a buggy, over-engineered, exploit-ridden web interface? I could do with some for a farm project at the moment, but as far as I can tell, they're uniformly awful. Are there any that are reflashable with something more respectable, even? Ideally what I want is a video stream over TCP with power-over-ethernet support - and no other services.