![]() ![]() The green circle lights up, and your Mac will only allow incoming traffic for established connections, signed software, and enabled services. If the window doesn't already say Firewall: On, click the Turn On Firewall button. 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. But if you use a laptop and hop onto untrusted networks frequently, you should enable the firewall. Do you need a firewall on your Mac? Well, yes and no.Ĭhances are that your computer is behind the firewall that's part of your router, so having macOS's firewall turned off makes it easier to set up connections with other Apple devices. ![]()
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