Murus 2

macOS Firewall Unchained


PF unveiled

macOS features one of the best network firewalls: PF (Packet Filter). It comes in an "under the hood" fashion, installed and disabled by default.
Murus' purpose is to unleash its potential. With its easy and intuitive icons-based and drag&drop-based interface, visual layers of abstraction and a friendly view of the PF firewall it's a lean and mean tool to protect your Mac and network.
Designed with ease of use in mind, yet full of advanced options and monitoring tools, Murus is perfect for everybody; from the average user to the experienced UNIX guru/system administrator and even for educational purposes.
Configure and start the PF firewall in one click using built-in presets, use Murus graphical ruleset editor design tool or write fully customized rulesets using the advanced rule editor.
Murus Pro includes Vallum, an application-layer firewall. This allows you to take full control of your Mac at both application and network level.
Click here too see a comparison between application and network firewalls.

Protect your Mac using tools already built into macOS

Unleash the hidden power of PF, the macOS packer filter

Easy firewall configuration using the Assistant

Create firewall rules managing graphic objects

Visualize PF configuration using simplified layers of abstraction

Powerful custom rules system lets you create fully customized PF rulesets

Access a very large set of advanced networking features and options including bandwidth management

Block applications using the bundled Vallum application-layer firewall, be aware of what happens under the hood and which apps leak data to the network

Available in three flavors, including a free version


Streamlined and user friendly

Forget all about command line. Murus offers you the possibility to access advanced proactive features like port knocking and adaptive firewall in one click. The strong logging ecosystem offered by Murus and its companion app PF Log Reader grant the user a fully customizable logging policy, a realtime graphical view of PF logs and statistics and a user-defined notifications system. Share your Internet connection and define per-client access limits and accounting, export LAN services to the Internet with port forwarding. Everything is done simply using icons, checkboxes, buttons. And everything is based only on features and tools already built into macOS.

Learn how to

A firewall is not magic. You are going to protect your Mac, and you are going to do it using PF, the macOS firewall. Use Murus to learn how PF works, using the three layers of abstraction. These layers represent the firewall configuration using icons or using simplified, commented and visually enriched rules, or using a runtime table-based rules browser. Protecting your Mac is not the only purpose of Murus. It is also a learning tool. We include documentation for both Murus and PF Log Reader, and a generic macOS PF manual. You will learn how to handle PF and you will be able to create and manage your own hand-made rulesets.

Learn More


Murus is available in three flavors. All Murus versions can be used for commercial purposes excluding Murus family pack licenses and Murus Lite.

Murus Lite
Murus Lite is the entry level firewall front end. Everybody can download it and use it for free for non-commercial use. It features inbound filtering and logging and can be used to protect services running on the Mac. Despite being free Murus Lite is not a tryout or demo. It is a full featured app and is a good starting point for the novice user.
Murus Basic
Murus Basic offers a lot of advanced features. It includes all you need to build a strong and reliable firewall configuration with a high customization level for both inbound and outbound connections. Access advanced features like port knocking, adaptive firewall and custom rules.
Murus Pro
Murus Pro unleashes the great power of PF offering a very wide set of features. It is the most complete front end for PF and is bundled with the companion app PF Log Reader and Vallum application-level firewall. Build and maintain a fully customized network infrastructure with your Mac.

Price List

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Educational Licensing Program
50 % off
Our Educational Licensing Program is available for academic institutions, schools, teachers and students. Get in touch with us to get a discount coupon code, you will be answered in a few hours, no question asked.



Murus 2 is a Universal app designed for macOS. It runs natively on both Apple Silicon and Intel Macs. It requires macOS 10.14.4 or later.

Murus 2.0.3 is still available for older Macs running macOS 10.12 and 10.13. Murus 1.4.22 is available for Macs running macOS 10.9-10.11.

All Murus versions are signed and notarized.

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