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Question: NX bit in OS X

(wiki article for reference: http://en.wikipedia.org/wiki/NX_bit)
It says in that article that OS X Intel "supports" the NX bit, but nothing about whether it's on by default.
Is it, and if not, how can I turn it on?

Thanks for helping me secure my Mac!

17" iMac 2GHz Intel Core 2 Duo 2.5GB RAM 160GB hard drive, Mac OS X (10.5.6), iPod 5th gen (with video) 30GB.

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joshz wrote:
(wiki article for reference: http://en.wikipedia.org/wiki/NX_bit)
It says in that article that OS X Intel "supports" the NX bit, but nothing about whether it's on by default.
Is it, and if not, how can I turn it on?

Thanks for helping me secure my Mac!

I don't think it's a user-operated switch.
http://www.insanelymac.com/forum/index.php?showtopic=35308

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Mar 25, 2009 8:04 PM in response to joshz In response to joshz

joshz wrote:
(wiki article for reference: http://en.wikipedia.org/wiki/NX_bit)
It says in that article that OS X Intel "supports" the NX bit, but nothing about whether it's on by default.
Is it, and if not, how can I turn it on?

Thanks for helping me secure my Mac!

I don't think it's a user-operated switch.
http://www.insanelymac.com/forum/index.php?showtopic=35308

Mar 25, 2009 8:04 PM

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Mar 26, 2009 8:11 AM in response to joshz In response to joshz

..." it says in that article that OS X Intel "supports" the NX bit, but nothing about whether it's on by default."...

I think it's safe to say the guy being interviewed here knows what they are talking about, and implies that if it is implemented at all in Leopard, it isn't doing much good...
http://www.tomshardware.com/reviews/pwn2own-mac-hack,2254-4.html

Mar 26, 2009 8:11 AM

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Question: NX bit in OS X