- Click on the Apple icon in the menu bar (top left corner).
- Select System Preferences... from the list.
- The System Preferences window will appear.
- Click on the Sharing preference pane.
- Click on the Firewall tab.
- In the Firewall tab you will see the state of the Firewall. It will either read "Firewall On" or "Firewall Off".
This applies to Mac OS X 10.3 (Panther)