Unknown logon attempts

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?
clcarlsonAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

strungCommented:
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
0
clcarlsonAuthor Commented:
Thanks for the suggestion. I will give it a try tonight and see if identifies the culprit. I will report back :)
0
strungCommented:
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.
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

clcarlsonAuthor Commented:
Where do I find the console logs? Do I access via terminal? Or is it viewable with a text viewer?

Thanks.
0
strungCommented:
Just open Console.app found in /Applications/Utilities, or use Spotlight to search for Console.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
clcarlsonAuthor Commented:
Ok, thanks. I will check it out.
0
clcarlsonAuthor Commented:
This was so easy and quick! The offending application (Calendar) popped right out when I opened the Console.app.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Apple OS

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.