Mac app firewall guides
Start with the problem, not the product.
Direct answers to the questions people actually ask about per-app internet access on Mac—then a clear explanation of when Faraday Cage fits.
Guide library
Choose your question.
The library is organized by search intent: immediate tasks first, then diagnostics, comparisons, and privacy architecture.
How to block an app from accessing the internet on Mac
Keep one app offline while the rest of your Mac stays connected.
Read guide → Understand macOSDoes macOS Firewall block outgoing connections?
Incoming protection and outbound app policy are different jobs.
Read guide → InvestigateHow to see which apps are using the internet on Mac
Find the process, destination, and policy decision you care about.
Read guide → PrivacyHow to stop Mac apps from phoning home
Separate essential services from optional telemetry and background calls.
Read guide → CompareLittle Snitch alternatives for simple per-app control
Compare use cases without pretending one firewall wins every category.
Read guide → Focused workflowRun one Mac app offline without disconnecting Wi-Fi
Test offline behavior or contain a local tool while staying online.
Read guide → Trust modelWhat “local-only Mac firewall” should actually mean
Evaluate telemetry, cloud enrichment, storage, accounts, and updates.
Read guide →Need per-app outbound control?
Faraday Cage is in private beta while its signed runtime passes final acceptance.
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