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OS X: About the application firewall - Apple Support 嗚嗚嗚 不要再欺騙我惹~~~Configuring the Application Firewall in Mac OS X v10.5 Make sure you have updated to Mac OS X v10.5.1 or later. Then, use these steps to enable the application firewall: 
	 Choose System Preferences from the Apple menu. 
	 ......
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