Turn off the Mac firewall from within the System Preferences menu in Mac OS X 10.5 and up. You need only your Mac desktop or laptop and your administrator username and password to complete the process.Continue Reading
Power on the Mac computer, and wait for the desktop to load. Do not open any new programs after the computer boots to the desktop.
Select System Preferences from the Apple menu. Next, click Security or Security & Privacy in OS X 10.6 and later. In OS X 10.5, click Security from the System Preferences menu.
Click the Firewall tab in the Security menu. In OS X 10.5, choose a mode you would like the firewall to use. In OS X 10.6 and later, click the lock in the lower-left corner to unlock the pane. Enter your administrator username and password. Turn off the firewall, or click Advanced for more configuration settings.
To enable the firewall, repeat Steps 2 and 3, and select Turn on Firewall. You may also have to enter your administrator username and password to make the changes. Afterward, close the Security window, and use your computer normally.