09-17-2019, 05:27 PM #16
It came to mind when you mentioned that your Mac occasionally turns on by itself, however, it's pretty unlikely that somebody is doing that but it doesn't hurt to turn stealth mode on.
That way if some one scans IP addresses, your Mac will not respond is "stealth" is activated thus making your Mac essentially "invisible".
"Stealth is rurned on in the Firewall preferences under Firewall options.
There is a brief description there what it does.
- 09-17-2019, 05:56 PM #17
09-17-2019, 05:59 PM #18
How to Enable Stealth Mode Firewall in Mac OS X
How to Enable Stealth Mode in Mac OS X Firewall for Added Security
Use stealth mode to keep your Mac more secure - Apple Support
09-17-2019, 10:02 PM #19
But I have had stealth mode activated for as long as I can remember - never had any network issues because of it.
I suppose if I needed to log into my Mac remotely this might be a problem.
Can anyone shed a bit more light on this, ie what problems could one encounter?
Any internet activity I do, web browsing, FTP transfer, torrenting, email communications - all works fine.
09-19-2019, 03:53 AM #20
The good news is that a new PRAM battery is really cheap, you can get them for two for $1 at any Dollar Tree store or for a bit more at a Walmart jewelry counter. It is commonly known as a
The bad news is that on your model of iMac, while it isn't exactly hard to replace the PRAM battery, it is a bit involved. See:
iMac Intel 27" EMC 2309 and 2374 Teardown - iFixit
(step 21)Randy B. Singer
Co-author of The Macintosh Bible (4th, 5th, and 6th editions)
Mac OS X Routine Maintenance • http://www.macattorney.com/ts.html
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