As you might expect, throughout the day a large number of applications connect to the Internet on your Mac. Safari or similar is obvious, because its mission is to give you a web experience. But there are others that also make use of your Internet connection without even telling you . For example, Photoshop executes commands on the Internet, and is actually a photo editing tool.
If you want to avoid this type of connection, the logical thing to do is to block access to hosts from the Terminal. This isn’t easy unless you’re a more advanced user and have a minimal idea of code. If not, what you can do is use a firewall program , such as Radio Silence.
With Radio Silence you don’t need to know code to block Internet access
The mission of Radio Silence is very clear, to show you which applications connect to the Internet from your operating system and to block those that you don’t want to. In other words, Radio Silence allows you to manage which applications have access to the Internet to avoid unnecessary updates, background runs and bandwidth consumption.
Actually in most applications you install you can configure whether or not to allow them to access the Internet . Note that many ask you if you want to send anonymous usage data to the company. They do this to improve the user experience through the use of the program. In any case, it is always good to be in control of all applications with Internet access.
The impact of the app on the system is minimal as it barely spends any resources
Radio Silence runs directly and uses almost no system resources . When you open the application you will find yourself in the Firewall tab, where there is a list of blocked applications (or the blacklist). The list at startup is empty, so you’ll have to select which applications from the installed ones you want to add. The other available tab is the Network Monitor tab, which shows in real time which OS X applications and services are connected to the Internet and what activities they’re doing.
If you want to try Radio Silence you can download the free trial version and use the program for a few days. If you’re convinced, you can buy a license for $9, a no-download price for the utility it offers. But if you are not convinced, go ahead with the OS X Terminal.