Both Morgwen and I listed the possible reasons why you would get a ping or connection request. Please re-read these posts carefully.

It seem that you are upset because someone out in the Internet Cloud initiated some activity with your machine. If that is a problem, you can try to control the whole world, disconnect from the Internet, secure your machine, or relax and enjoy it. Pick one..........

When you drive on the public streets it may annoy you that someone toots their horn within your hearing distance. You may not be doing anything to cause a tooting.

Life's a beach.........

cheers,
jd