I like to know many MB are flowing to and from my computer, nearly constantly.
Obviously a Network Monitor is a great place to spy on what I am doing, so I am not real big on just picking any program.
Yes I know about WireShark, and Glasswire. Just, I am thinking something smaller. Although, I may choose to use either one of those simultaneously with a basic Network Monitor.
Might be there is already a Monitor, I just have not found it. Frankly I am holding off on running 4.1 until it is ready for secure use.
IPTraf is what I’m using from ages, as it runs from CLI but has some nice and easy to use User Innterface (by ncurses). It is small, and runs on every Linux based appliance.
But there are other similar (small) tools out there…