This issue happens to me in both my rMBP 13 and my Mac Pro. As I understand it, Little Snitch is not applying the rules when the network filter is off:

enter image description here

But why does it turn itself off from time to time? I always have manually to restart the filter.


That's its demo behaviour, it will run for 3 hours then switch off.

Check it thinks it's authorised.
'Open Little Snitch Preferences...'
Registration tab

enter image description here

Also, as you are running it on 2 computers, ensure you have a separate Registration for each [or a Family License] otherwise if it sees 'itself' on the network it will switch off.

Alternatively, make sure you don't have the on/off toggle key command active & are accidentally hitting it...

enter image description here

You are correct in your assumption that it is not applying the Rules when the Network Filter is off.

  • A thorough response, thanks. I do have it registered with a single license on each computer: i.imgur.com/VVy3f3y.png I checked everything else. Now that you mention it, I think this started when I installed it on the mac pro. Must be a licensing problem. – Carles Alcolea Aug 15 '15 at 10:23
  • The pricing makes it cheaper to get the Family License even for just 2 machines; so I'd go for that, if that's what it turns out to be. – Tetsujin Aug 15 '15 at 10:36

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .