Friday, November 11, 2011

How To Find Out Who's Connected To Your Computer

Would you like to know if somebody is connected to your computer? There is a dos command called "netstat" that can help you find that out.  Before you do it be sure you close your browser, email client, chat, or any software that connects to the internet.  Here's how to do it:
  1. Go to run and type cmd
  2. The command prompt will open, type "netstat -ano" (without the quotation) . You may also use "netstat -ano 10" so that it continuously refresh the screen every ten seconds.  To close it just press CTRL + C.
  3. Look closely for those that has an "established" state.  If you see something that is connected despite that you already closed the programs that connect to the internet chance is somebody is snooping on your computer. Take note of the PID of that program.
  4. To stop that programs open the Task Manager by pressing CTRL + ALT + DEL simultaneously on your keyboard.
  5. Click the "Process" tab. If you do not see the PID you may click "View" and click "Select Columns" click on PID (Process Identifier) and click OK.
  6. Look for the PID of the program you just found from the command prompt. Click on that program and click "End Process".
Alternatively, you may use CurrPorts from Nirsoft to monitor the list of all currently opened TCP/IP and UDP ports on your computer.


  1. This is great and very helpful. Thanks for sharing!:)

  2. Hi Sagittarian,

    Thanks for your comment. If you're free please check for my upcoming posts.

  3. Really your blog is very nice.
    I like your blog.
    I glad to see your site.
    I invite you visit my site.
    I wait for you.
    World Heritage Site
    Programming Language
    Windows 7 and Windows XP
    Daily Shopping
    Computer & Electronics

  4. Hi Shahanara,

    Thanks for dropping by. I'm glad you like my blog. Come back again and check for my upcoming posts. Sure, I will visit your blog.

  5. Am trying out your tips for netstat. So far excellent. Stuck on what some of them are in the taskman list. But it's really a great article and helping me a lot. thanks

  6. Hi Jennie,

    I appreciate very much you find this post useful. Just be careful when ending a process because your windows might crush. We have to be certain about it before doing this procedure. If you need need any help you can post your message here or send me an email. Thanks for dropping by and have a great weekend.

  7. Wow! This is great! You know I am always searching google for some tutorials like this, but know I am here with this helpful tutorials from you ED! Thank you so much ! :)

  8. Hi Prime Aque,

    I'm glad you find it useful. I hope you will drop by more often. You're welcome buddy.

  9. Hello buddy , of course, when I got some problem with my pc, I know where is the perfect place to go for help! It's here!

  10. Hi Prime Aque,

    I appreciate you found my blog useful. And, thanks dropping by. I find your blog interesting as well I will visit your blog whenever I get a chance and see for your upcoming articles. Have a nice day buddy.

  11. Hi Ed, thanks for these tips. really helpful, now I realized that I need your help. Haha. I know it's off topic but are you famialiar with dell computers? The Dell inspiron e1405 was reformatted and now the wireless connection won't work. tried to install the ones that came up with the laptop but it won't work now. can't find drivers online. help kabayan! :)

  12. Hi Wawan,

    I'm glad that you find my blog helpful. With regards to your query about Dell Inspiron e1405 driver you can get it directly from Dell .You just choose the operating system installed on your computer. You'll find the driver that you're looking for under "Network". I suggest you download all the drivers and save it in an external storage medium so that in case you will need to reformat your computer you all have the drivers with you. You're always welcome "kabayan". Have a pleasant day my friend.


  13. Hi, ED,
    Glad to have found your blog,
    Got useful tips to use,
    Got to
    Go, will visit on and off!

  14. Hi Starwordsworks,

    Thanks for dropping and I'm glad you find this post useful. Hope you will come back more often.


  15. Hi Ed,
    As always I find your site the most helpful and easy to follow. Again as always I have to keep referring back to your instructions on How to find out who is connected to your computer, which is most useful, a problem has occurred where the DOS window will not expand by any of the usual methods. So the right side is cut off and I can't see the PID of the established connections. Any suggestions are welcome Ed, and if anyone knows how to fix this, it is you.
    As always thank you, Jennie from narrator reviews.

  16. Hi Jennie,

    I'm really excited to see your comment. I'm so glad that you drop by again to my blog. To answer your question I posted today an instruction on how to shift to full screen of the DOS command window. You just have to go to the main page or simply click the banner up above to go there directly. I'm not sure which type of Operating System you are using. However, I'm assuming that you are using Windows 7 (which is exactly the instruction I just posted) though the same instruction may be applied to Windows Vista. If you are using Windows XP then it makes the procedure much easier because you just have to press ALT + ENTER when you are on the command prompt.

    I hope that answers your question. If there is something more that you wish to clarify I would be more than glad to assist you.

    Have a wonderful day my friend. God bless to you and to your family.

    ED (a.k.a. Erwin D.)