![]() However, you can monitor outgoing connections as well. The built-in firewall gives you the ability to monitor and block incoming connections. Should the Outbound Firewall Be On or Off? Click the lock icon in the lower-left of the window, enter your administrator password, and click Unlock. To turn on the firewall on your Mac, open System Preferences > Security & Privacy > Firewall. You can specify, for each app, whether to allow or block incoming connections. The built-in macOS firewall offers this, and by design, it's simple and intuitive. This component of the firewall will allow or deny access for an app to establish communication over the network. ![]() In macOS's case, there are two components of the software firewall. ![]() We have already discussed in detail why you should use a firewall. The importance of a firewall as a part of a security strategy cannot be underestimated. We'll show you how to configure your firewall and when you need to use it. If you keep those services enabled or use third-party apps, that could make your Mac vulnerable to a network attack. MacOS also includes an assortment of shared network services to remotely access your content.
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