Yeah, but what I'm getting at is basically: running LittleSnitch on MacOS makes it clear how much activity is happening. Surely OpenSnitch on GNU/Linux would do

Yeah, but what I'm getting at is basically: running LittleSnitch on MacOS makes it clear how much activity is happening. Surely OpenSnitch on GNU/Linux would do the same. But I would assume that some knowledgeable people would know about the extent of the difference generally. I suspect that MacOS programs are far more rampant in calling home, and the GNU/Linux stuff would mostly just be proprietary programs doing it. So, I was asking if people know about this stuff generally…