OS X v10.5.1 and later include an application firewall you can use to control connections on a per-application basis (rather than a per-port basis). For example:įor greater control, you can select apps and services, and specify whether they can have access through the firewall. However, your Mac can still allow access through the firewall for some services and apps.
MacOS Big Sur includes an application firewall you can use to control connections made to your computer from other computers on your network.Ī firewall can protect your Mac from unwanted contact initiated by other computers when you’re connected to the internet or a network.
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How to Enable and Configure the Firewall on the Mac Running macOS Big Sur. Our Facebook page and group link are the following: If the lock at the bottom left is locked, click the lock to make the changes. On your Mac, Click the Apple menu then System Preferences, click Security & Privacy, then click Firewall. If you turn on a sharing service such as file sharing, macOS opens a specific port for the service to communicate through.Īn app or service on another system can request and be given access through the firewall, or it might have a trusted certificate and therefore be allowed access. I have mentioned all the steps below in the descriptions.Ī Mac firewall can protect your Mac Computer/Laptop from unwanted contact initiated by other computers when you’re connected to the internet or a network.
In this video, I have explained the complete steps to turn on the firewall.
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