Disabling the Mac Firewall
If you are using the Mac firewall and are experiencing connection problems, you may wish to disable it to see if doing so solves the problem.
To disable the Mac firewall:
- Click the Apple icon, then click System Preferences.
- Double-click the Sharing icon.
- Click the Firewall tab.
- If the firewall is on, click the Stop button to disable it.
For more information, see: