Shut Down Unwanted Connections To Your PC With CloseTheDoor

Ryan Dube 16-12-2011

close network connectionWhen computers work well, things are pretty cool. Every component of your PC just….works.


But when you get one of those nasty little downloads – one of those little scripts or apps that dig its way deep down into the heart of your computer – it can be unnerving.

Suddenly, your keyboard doesn’t work quite right. Your CPU starts going haywire when you aren’t even doing anything. Your mouse starts flipping out every time you open a particular browser.

If you’ve ever been bothered with such a malware or virus software, then you know what I’m talking about. Those little apps sometimes latch themselves to the inner workings of your computer when you least expect it.

While we all trust antivirus software and anti-malware programs like IOBit Optimize, Sterilize, & Harmonize Your System With ioBit Advanced System Care [Windows] Having given ioBit Advanced System Care a test run, I can confidently say it’s a great free solution for – indeed – many of your windows problems. The app makes a thorough effort at both... Read More or MalwareBytes Stop & Delete Spyware With Malwarebytes for Windows It may not be as feature-laden as Spybot Search and Destroy, which has a ridiculous number of tools, but it is a very lightweight alternative with good spyware coverage. Read More to identify those nasty varmints, the truth is that sometimes things slip through the cracks.

Luckily, there is a new tool you can use to manually go through and clean up those evil processes.


Close the Door on Malware

The bottom line is that any malware is typically meant to run in some form on your PC, and somehow transmit information into or out of your computer via the Internet.

A very simple utility called CloseTheDoor lets you probe into the processes that are running on your computer, and analyze those processes at a level that usually requires a professional. The reason you can do this is because CloseTheDoor makes the analysis very simple and logical, putting all of the tools you need in one place.
close network connection
When you first run the program, it performs it’s basic function fast and well. You’ll see a list of every process “endpoint” that is listening on any port on your computer whatsoever. The detailed list tells you the interface IP (if there is one), the port, communication protocol, process ID, and any associated services.

While this all may not tell you exactly what the process is right away, the information is an important first step toward recognizing that something is running on your computer that you do not want running.

In particular, look for processes without any associated company or description information.
close connection
Once you spot a process that looks fishy, and you want to learn more, just click on the “Selection” menu and then click on “Locate the executable file”.
close connection
As you can see below, by tracing down the actual executable, you will often be able to identify the software that kicked off the process. For example, in this case Windows Explorer opened to the path for PaperCut NG, which was an educational software package that I was testing recently.
This discovery told me that there was a process running that I didn’t know about, consuming precious memory. Uninstalling the software removed that process, freed up the memory, and ultimately improved performance.
close connection
If you click on “File” and then the summary, you will see a general report with totals for how many endpoints are listening on each interface IP address. You don’t need to be quite as concerned with the IP addresses as you do with the total number of processes that are listening on some port on your PC
kill network connection
The software also gives you an entire toolbox of shortcuts and tools you can use to troubleshoot any problem processes that you simply can’t seem to recognize as valid. Sometimes, there may be a process running that isn’t malware, but you really don’t want it running all the time. That may be from a startup shortcut being added to your Startup folder without your knowledge. You can check out things like that using the System configuration utility under “Tools”.


kill network connection
Here you can view running services on your computer, and more importantly you can view and disable or enable all of the applications that are set up to auto-startup when you boot up your computer. This configuration utility puts all of the Windows config tools that can help you with process analysis all in one convenient window.

Shut Down Unwanted Connections To Your PC With CloseTheDoor closethedoor7
Another fast way to analyze an unknown process is by right clicking the service in the main display, and clicking on either “Process services” to view the services that are kicked off by this process, or you can use any of the Google or Wikipedia links in the list to research exactly what the process might be, and what that particular port is usually used for.
kill network connection
If you click to view the services, you’ll get a table of all running services that were kicked off by that process. You can select any of these services and stop them if you want. More importantly, some of the detailed names for those services may also offer some clues as the what the mysterious process is really all about.

Shut Down Unwanted Connections To Your PC With CloseTheDoor closethedoor9
To help you do some extensive research on the processes and services that you find running on your PC, CloseTheDoor offers a list of online resources under “Internet References”. Click on any of these to open up your browser and review resources like a list of port numbers and their uses at, a list of all Windows services at or how to configure your firewall at Microsoft.
close network connection
The bottom line is that there will always bee some new malicious app out there that somehow – no matter what protections or blockades you put in place – gets onto your PC. When things start heading south with your PC activity and performance, researching your running processes is always a really good idea, and CloseTheDoor makes the process simple and painless.

Try out this utility and see if it helps you identify things running on your PC that you didn’t know about. Share your experiences with the software in the comments section below.


Image Credit: Shutterstock

Explore more about: Anti-Malware, Computer Maintenance, System Monitor.

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  1. Axza
    December 17, 2011 at 12:52 am

    thank you man that was very important and useful to me my PC hang many times at the last period and i think this will give me some help 

    thank you again ......

    • Ryan Dube
      December 17, 2011 at 8:24 pm

      No problem - It really helped me clean up our desktop PC at's a great app. Thanks for your comment.

  2. Jordy van der Veer
    December 16, 2011 at 11:52 am

    Very nice tool, this helps me recognizing everything. Thx nice explanation

  3. iBaghdadRaza
    December 16, 2011 at 8:18 am

    First Comment :P

    Thanks... for that