How to check what App is listening on your network

I had a virus scare the other day. Google was blocking me and calling me a spammer. Ultimately, what happened was my modem picked up a bad IP from the dynamic pool which was causing me grief. After 3 hours of investigating, all I needed to do was reset my modem to pick up a new IP.

It took me ages to find a tool to see if any applications I was running were communicating over the internet which I was not aware of. Eventually I found CurrPorts which I found fantastic. I was easily able to see what was connecting to external devices.

It picked up that an app was doing upgrade checks which I was unaware of. This was fine and acceptable but proved the tool works.

Tool is available here;
http://www.nirsoft.net/utils/cports.html

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