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Ugh. Don't buy third-party firewalls. Either use the one built into OS X or use a decent SPI firewall as built into many broadband routers. Or both.
 
People who say it sucks usually don't have a grasp of what it can do. The UNIX underpinnings of OS-X have been around for a looooong time.

The built in OS-X firewall's is okay but there are some apps out there to help users tweak it.

The built in firewall is actually very powerful but you can't exploit the capabilities using the standard interface through system preferences and tweaking with the command line is out of the question for most average users, myself included.

I know the apps are out there, I have come across them.

Can anyone suggest where to look?
 
Thanks for your replies, I was unaware that my imac had a firewall??

Silly question (another silly question!?!?!), how do I configure it??
 
if you are asking, it's unlikely that you need to configure it. just turn it on. :)

in case you really want to know, click here.
 
Stealth mode

Should I turn the stealth mode on? I'm not sure if the firewall is even on??
 
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