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Message: <blockquote data-quote="Lifeisabeach" data-source="post: 1919565" data-attributes="member: 38864"><p>What Randy said. Probably the only GOOD case for a firewall is if you are running something like an FTP server or remote in to your Mac from outside your home. In those cases, you want a 3rd party adaptive firewall that will block unwanted intrusion attempts. Some time back, I briefly ran a server on my iMac so I could remote in away from home and by necessity had to open the port up on my router to forward directly to that iMac. I was pretty quickly besieged by unknown parties trying to brute force my credentials. An adaptive firewall was needed to automatically block those IP addresses after x number of failed attempts.</p></blockquote><p></p>