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Unknown logon attempts

Posted on 2014-11-25
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Last Modified: 2014-11-26
Ever since upgrading to Mac OS Yosemite, I've been experiencing unknown logon attempts to my work server -- the logon attempts are coming from my home computers. The work server is Windows 2008 SBS. The logon is using an incorrect password which is causing a lockout on my user account.

I have deleted the native VPN accounts thinking this might be causing the problem. But it still occurs. I installed the Sonicwall NetExtender Mac client application to connect to my work VPN because the native Mac VPN connection did not work after the upgrade to Yosemite (I understand there's a bug in the OS). However, I was observing the logon attempt behavior prior to installing NetExtender -- so I don't think it's related.

Is there a way to determine what is causing this behavior?
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Question by:clcarlson
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7 Comments
 
LVL 53

Expert Comment

by:strung
ID: 40465010
Try Little Snitch. It alerts you to outgoing connection attempts from your Mac:

http://www.obdev.at/products/littlesnitch/index.html

There is a free demo:  http://www.obdev.at/products/littlesnitch/download.html
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Author Comment

by:clcarlson
ID: 40465026
Thanks for the suggestion. I will give it a try tonight and see if identifies the culprit. I will report back :)
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LVL 53

Expert Comment

by:strung
ID: 40465053
Alternatively, you could check your console logs for the time the log in attempt was made. There is likely a log item for the failed attempt.
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Author Comment

by:clcarlson
ID: 40465065
Where do I find the console logs? Do I access via terminal? Or is it viewable with a text viewer?

Thanks.
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LVL 53

Accepted Solution

by:
strung earned 2000 total points
ID: 40465069
Just open Console.app found in /Applications/Utilities, or use Spotlight to search for Console.
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Author Comment

by:clcarlson
ID: 40465074
Ok, thanks. I will check it out.
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Author Closing Comment

by:clcarlson
ID: 40468128
This was so easy and quick! The offending application (Calendar) popped right out when I opened the Console.app.
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