How to check which application or software is using Internet connection

by Abhishek Bhatnagar on July 13, 2008



There can be viruses or key loggers or some malicious softwares in your computer which might be connecting to Internet in background secretly. There are also many softwares which use Internet without asking for your permission.


So the big question is:


How to check which application or software is using the Internet connection?



magnifying glass

The answer is that there are more than one ways of doing it, lets see the methods one by one.



Using TCP-View Utility:



To see what applications are connected to the Internet or what applications are using Internet, you can use a small utility by Microsoft Sysinternals called TCPView. This is a small and handy utility which you can download here and run.

When you run the utility it will display all the applications which are connected to Internet. See the image below (Click to enlarge):

TCP View

Connections which change state from one update to the next are highlighted in yellow; those that are deleted are shown in red, and new endpoints are shown in green.



And don’t worry about SVCHOST.EXE, this is a windows task which keeps running in background and will be displayed in this list several times.


This will give you an idea of what processes are using Internet connection. If you find anything suspicious, search that file and delete it if you think that its something that you have never installed something like that.


Geeky way:



Also there is a geeky way of doing this without using the TCPView Utility,for that open the command prompt and type the following command and it will display all the applications connected to Internet, it will refresh the list every two seconds.


netstat -b 2


netstat command


Have a safe and secure Internet Surfing!

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{ 21 comments… read them below or add one }

Pavan Kumar July 13, 2008 at 4:47 pm

That’s nice… I needed one such… Thanks for sharing…

Siddharth July 14, 2008 at 8:03 am

this is nice 😀
I like the geeky way more 😉

Ashish July 16, 2008 at 8:59 am

hey dats cool…bt m luking for a bit more…is it possible to monitor traffic usage of individual applications that have already established the connections?

abhishek July 16, 2008 at 9:03 am
Online Advertising July 24, 2008 at 12:55 pm

Great Tutorial. Thank you so much!

Bill Vincent August 3, 2008 at 1:03 pm

The ‘geeky’ way is quicker and easier! Nifty!

Sarfaraj Khan April 24, 2009 at 10:01 pm

Can I End process which something suspicious. If any virus using Internet Connection. It is possible or not.

Sarfaraj Khan April 24, 2009 at 10:02 pm

Ha ha…………………..that is cool method to check Internet status.

Shiv Singh April 26, 2009 at 3:53 am

thank you this is very good.

Gagan May 28, 2009 at 6:09 am

netstat trick is awesome

Phaoloo July 29, 2009 at 3:29 am

Ahh, nice tip to notify is there any silent trojan or spyware sending data out.

Abrar November 19, 2009 at 12:52 am

thanks a lottt… much needed soft now a days

Shakti Smaran September 16, 2010 at 10:22 pm


vijay October 7, 2010 at 7:54 am

this is very helpful to me and very useful.

aakarshit November 14, 2010 at 6:58 pm

nice one……….
thnks a lot

Aiyedun oluwatoki June 27, 2011 at 5:54 pm

want to be an expert programmer…pls help

sam October 28, 2011 at 4:59 pm

amazing you saved me my windows media player was taking internet like hell

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