For many different reasons you may wish to check what your computer is communicating with. It may be your internet has become slow and you think a program, malware, spyware etc are using your internet without your knowledge. It may also be a case of diagnosing issues with internet filtering if you are part of a business or school.
To check what your computer is connecting to, open command prompt as an admin (click start –> type cmd –> right click “run as administrator”) and type
<pre>netstat -abf 5 > activity.txt</pre>
After a few minutes press ctrl+c to cancel.
This will produce a file called activity.txt within your profile, this file will consist of different processes on your computer that have made a connection along with the full DNS name that it connected to.
I found this helpful when diagnosing issues with our website filtering.