Murus comes with an extensive collection of predefined configurations for various network services aimed to cover most situations, but you can also define custom services and assign them port numbers and protocols. Manually define firewall rules via drag and drop, without dealing with the command line ![]() The manual can show you how to put in place advanced traffic filters, how to share your internet connection, or how to manage the bandwidth usage. The built-in presets come in very handy, but Murus also integrates a Quick Start guide and more extensive documentation that can take you through everything you need to know. Note that some of these settings block both inbound and outbound services, so make sure that is what you want. On short, you must control the internet access for essential services, decide how you want to handle inbound and outbound filtering, what to do with open ports, and so on. The best part is that Murus also adapts the approach and terminology for each configuration standard: the novice wizard integrates lengthy explanations for each feature, yet the intermediate and expert layouts skip over describing basic concepts. The novice mode comes with 7 presets that have different degrees of security: read the built-in description to decide which one is suitable for your current situation. If you are a novice when it comes to bullet proofing your network connection to the internet, Murus provides a configuration wizard that adapts to the user knowledge level: novice, intermediate, or expert. ![]() Configure the OS X firewall using different strategies and apply predefined presets aimed at beginners The utility enables you to define firewall rules for different network services with simple drag and drop gestures and by checking boxes instead of typing shell commands. This is where Murus comes in and brings all the power of PF within a user-friendly graphical user interface while also packing configuration presets with comprehensive explanations for inexperienced users. The OS X built-in PF firewall is quite robust and can handle more complex configurations, as long as you are willing to read the technical documentation and make the necessary adjustments via the Terminal application. Unfortunately, this is not enough when connecting to the internet through untrusted networks. Moreover, you get to decide if you want to allow or block incoming network connections on an application level. ![]() Within the OS X System Preferences, you get to activate the OS X ALF (short for Application Layer Firewall) and choose to block all incoming connections except the ones related to basic Internet services, to automatically allow incoming connections from signed software, or to toggle the stealth mode. Murus brings greater control over the OS X PF (Packet Filter) firewall without making you deal with the command line. OS X integrates a network firewall that can be configured via the shell Terminal and a more user-friendly application level firewall that can be handled via the System Preferences, yet has rather limited personalization options.
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