01
Block an app's outgoing traffic
The built-in Mac firewall blocks incoming connections only. Every app on your Mac can still phone home to whatever server it wants, and most do, dozens of times an hour. This guide explains why, walks through a free fix with real screenshots, and compares the four serious options honestly.
- Does the macOS built-in firewall block outgoing connections?
- Why doesn't macOS include an outbound firewall by default?
- Will blocking an app's outgoing traffic break the app?




