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A Lot of Work, But Free
Authored by: Spencerian on Jul 10, '02 12:33:19PM

Great hint for the hacker in all of us, but I'm still a "Mac app" guy at heart.

I've used NetBarrier from Intego (www.intego.com) on my Mac OS 9 system as a firewall before I moved to OS X. (OS 9 hasn't a firewall in its OS, as you may know.) Works great, and includes similar logging and intrusion features as in the tip, including sending an e-mail when it has been attacked. It maintains its own logs and archives them by your preferences.

Although BrickHouse is versatile, I'll probably get the Mac OS X version (available now) for two primary reasons: (1) BrickHouse is a bit more propellerhead in its configuration than I care for--NetBarrier was easier to configure, and (2) NetBarrier X does not use the ipfw of OS X, but its own code. In the unlikely event that someone learns to violate the OS X firewall, NetBarrier will not be as susceptible.



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other firewalls (not ipfw)
Authored by: hayne on Jul 10, '02 01:16:39PM

I believe that 'ipfw' itself is merely an interface to the code that actually does the work - which is in the kernel. So, unless these other firewall utilities (that say they don't use 'ipfw') introduce their own kernel extension, the protection you get would be the same and would stand or fall with all others in the (extremely unlikely) event that the kernel firewall code was compromised. And if these other firewall utilities do introduce their own kernel extensions, that would be a cause for concern in itself as such code would likely be far less reliable than the standard kernel code.



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other firewalls (not ipfw)
Authored by: Spencerian on Jul 11, '02 03:24:58PM

Thanks for the clarification. With that, I should say that NetBarrier is its own firewall code, independent of the OS X firewall code.



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