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Enable application firewall

Overview​

About this script

This script improves your privacy on macOS.

These changes use Mac system commands to update your settings.

This script uses Bash (Shell script) scripting language.

Safe for General Use

This script is recommended for all users. It helps to improve privacy without affecting stability.

Implementation Details

  • Language: bash

  • Required Privileges: Administrative (sudo) access

  • Compatibility: macOS only

  • Reversibility: Can be undone using provided revert script

Explore Categories​

This action belongs to Configure macOS Application Firewall category. This category configures macOS using 5 scripts. These scripts are organized in 1 categories. The category includes 3 subscripts and 1 subcategories that include more scripts and categories. Read more on category page ▶

Apply now​

Choose one of three ways to apply:

  1. Automatically via privacy.sexy: The easiest and safest option.
  2. Manually by downloading: Requires downloading a file.
  3. Manually by copying: Advanced flexibility.

Alternative 1. Apply with Privacy.sexy​

privacy.sexy is free and open-source application that lets securely apply this action easily.

Open privacy.sexy

You can fully restore this action (revert back to the original behavior) using the application.

privacy.sexy instructions
  1. Open or download the desktop application
  2. Search for the script name: Enable application firewall.
  3. Check the script by clicking on the checkbox.
  4. Click on Run button at the bottom of the page.

Alternative 2. Download​

Irreversible Changes

This script is irreversible, meaning there is no straightforward method to restore changes once applied. Exercise caution before running, restoring it may not be possible.

  1. Download the script file by clicking on the button below:

    Download script

  2. Run the script file by clicking on it.

Download revert script​

This file restores your system to its original state, before this script is applied.

Download restore script

Alternative 3. Copy​

This is for advanced users. Consider automatically applying or downloading the script for simpler way.

  1. Open Terminal app

  2. Copy the following code:

Code to apply changes
/usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate on
sudo defaults write /Library/Preferences/com.apple.alf globalstate -bool true
defaults write com.apple.security.firewall EnableFirewall -bool true
  1. Paste the code into terminal.
  2. Press Enter to apply the code.

Some scripts requires restarting your computer to take affect.

Copy restore code​

Copy and run the following code to restore changes:

Revert code
/usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate off
sudo defaults write /Library/Preferences/com.apple.alf globalstate -bool false
defaults write com.apple.security.firewall EnableFirewall -bool false

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