Regarding the "Monitor Windows connections with Netstat" tip by Marnus Pieters, you can also send the output to...
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
For example, netstat -a -p tcp > netstat.txt writes all TCP connections and listening ports to the file netstat.txt. This can be useful when performing remote support (i.e. help desk) and you need your end user to provide you this type of info.