Make your computer invincible (almost) with Tiger's advanced firewall settings

摘要

By simply selecting the Block UDP Traffic check box, UDP packets can , be blocked, restricting network traffic to TCP packets only for open ports on your computer, which were directed to your IP address. This single step allows you to prevent unwanted requests to services on your computer. However, it's important to note that selecting this check box can adversely affect the function of some applications. Table A lists popular UDP ports used by Apple applications.