Helping people with computers... one answer at a time.

A lot of network traffic can mean several things. It can mean that you're doing a lot on the internet or it could mean that some malware is.

My internet connection status shows millions of packets when I'm not doing anything; do I have a virus?

Maybe, maybe not.

Okay, that wasn't very helpful. But to be frank I can't give you a definite yes or no. But we can do a little investigation to determine if what you're seeing is expected or a sign of a real problem.

I'll start with the obvious: you are running anti-virus software, right? And you do have the latest and greatest virus signatures for it, right?

If the answer to either of those was "no", then get thee to an anti-virus tool immediately, get it up to date, and do that scan. 99% of the time a good anti-virus tool will answer your "do I have a virus" question properly.

If anti-virus tools say you're clean then we start investigating. First, understand what the numbers in your connection status mean. Have a look at mine (from Start-> Settings-> Network Connections-> Local Area Network):

LAN Status Image

You'll note that I have 2 million packets sent, and almost 4 million received. That's count of the number of packets since that connection was made. You can see that the connection has been connected for almost three days. So the longer you stay connected the larger those numbers will get.

What's more interesting is how quickly they're changing as you do nothing. Chances are they'll grow even if you're doing nothing simply because you may be running some internet aware software - say an instant messaging program, mail program, or something else. But if they seem to be growing quickly there's activity that might be worth investigating.

In a previous article, How can I tell what internet activity is happening on my machine? I discussed several tools and techniques to see what's transpiring over your internet connection. I'll jump right to the tool mentioned at the end of that article, Sysinternals' TDIMon. Run it, log the output to a file, and then after running it for a minute or so turn it off and view the file in notepad. You should see lots of internet activity. Much of it you'll recognize as your own or perhaps as discussed in that article, expected standard windows tools. But if there's a program there that you don't recognize that seems to be doing a lot then it's probably time to understand just what it is. For that I've outlined several techniques in What's This DLL? that will work with .EXE files as well. That research should help you determine if you have a problem or not.

Article C1901 - March 7, 2004 « »

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Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

Not what you needed?

May 15, 2004 6:08 PM

I am a user on a home network sharing printers, files, and an Internet connection with several computers in the house. The individual computers use the Internet using DSL via a hub connected to a server then through a firewall connected to the DSL, which is using a static IP address. We are not using a proxy server.

Lately I have been having trouble receiving web pages. They would at some point all start showing up as not found. When this would happen I found that the only thing that would get it up and working again apart from rebooting or just waiting was to open the "Local Area Connection Status" window and disable the network connection and then enabling it again. Which got me noticing this:

Logically, it seems to me, that when I am surfing the Internet the packets would be far grater on the "Received" side then on the "Sent". Because I would be receiving web pages, images, sounds, movies, flash content, and so on, while sending, I would presume, just requests for that stuff. I seem to recall it once being that way when I would be monitoring the "Local Area Connection Status" window in the past. The "Received" would be a lot but the "Sent" would be very little. But now it seems that the "Sent" packets are nearly equal if not greater then the "Received" side. Why might that be? Dose the number of "Sent" packets correlate to the size of the files being "Received" in some way?
It causes me to think that whatever is being viewed on the web browser is being echoed or bounced back to someone else on the Internet thus doubling the network traffic. Could this be causing our problems or are we simply over tasking the network all on our own by all using it at once?
I notice your snapshot shows a similar ratio to what I am getting now. So perhaps it is normal and I am just remembering incorrectly.

Which brings me to one more question.

Would the program you mentioned "TDIMon" detect if a computer is being used as a Drone or Zombie in a Denial of Service (DoS) attack if that where the problem?

Thanks in advance for any info you can give. Or for that matter even just reading all this.

May 15, 2004 10:50 PM

Actually the real question to ask is "why would sent and receive ever be different?" For a normal transfer of information (like a web page, for example) each packet that is sent must be acknowledged with, you guessed it, another packet. So for each packet I send, I *should* recieve a packet saying that it was received.

That's *most* of the time. There are certain communications protocols (streaming audio and video come to mind) where an acknowledgement is not used. Depending on what machine you're looking at, viral probes that come in off of the internet may, or may not appear as recieved packets that your firewall probably will not respond to.

So the bottom line is that there's always a difference, and unless the difference is HUGE (or one of them is zero :-), it doesn't really tell you much.

TDIMon will probably tell you if your machine is being used as a drone, if you know what to look for. There's a lot of activity to wade through, even on a healthy system.

But really, the easier way is simply to look at your process list, or simply run good AV and SPyware scanners. That should not only to tell you, but fix it, if it is a problem.

Hope this helps.

May 16, 2004 11:31 PM

Yes that does help and makes sense now. It's bit of a relief for me to hear that and narrows things down a bit for me.

Thank you!

May 22, 2004 1:51 AM

check out for any trojans or worms in ur network

June 7, 2004 11:52 AM

Hello Leo i need help My packets are sending out way more then normal infact its making my computer internet slow its sending out like 556,543,packets sent and 23,500,packets recieved and connect time is 12 mins/45 secs :( :( :( WHAT DO I DO NEED HELP

June 7, 2004 11:57 AM

Follow the suggestions in the article: perform a virus scan immediately.

June 17, 2004 8:43 AM

Hi Leo ...

me too having the same prob ... have tried latest AV and spyware scanner till my PC is "clean" ... is behind a firewall and a linksys router... still having the same prob...

funny thing here is , i resorted to format the PC and reinstall the OS .. still, the same thing happen even though i have not install anything else.

is formating enough ? or is there other steps i need to perform to totally cleanup my harddisk?

pls advise and thanks in advance!

June 29, 2004 5:36 AM

Hi, for all who have this problem, i found solution! In my office was 2 PC with some problem, all you need clean yours PC with SpySweeper or any other soft and after that....
After that you need remove network card and install again!
Belive me its working, i think what some kind of spyware just corrupt network driver.
Have a good day and send thanks to me :)

July 4, 2004 12:12 AM

Hi Leo, I was wondering what it means if one of the Packets Sent/Received values was zero... More specifically, what problem is denoted by the "Packets Received" being 0? :) Thanks for your help!
PS> Happy 4th of July

July 4, 2004 11:11 AM

Ultimately it means that that network connection isn't operating. Now as to why, with just that one bit of information it's difficult to say - could be anything from the connection not being configured properly, to a bad cable, to a problem at the other end of the connection to any number of other things.

July 10, 2004 2:04 PM

Hi Leo - Great site! I faithfully have Norton Antivirus running to check for any virus. I also do a once a week sweep. I also run Spybot Search & Destroy and Ad-aware.

My packet sent are showing 4,294,968,512. Received is 6,458. During a workday the number can climb well over 24,000,000,000.

Today I ran and found nothing.

All of the programs are showing clean yet the packet sent go nuts every day. What should I do next?

July 10, 2004 5:08 PM

Yep. Those are big numbers.

In your shoes I'd start looking at the specific traffic that seems to be happening on your connection. This article might help:

September 30, 2004 3:54 PM

I had a similar experience as Oki with one exception. I had to download and install the latest network card drivers from Intel's (my laptop has an Intel Pro/100 VE network adatper) web site after removing the network adapter. After doing so, it solved the "trillion" send packet problem.

October 3, 2004 1:27 AM

thanks a lot Scott!!!
i had a similar problem with my laptop.
your suggestion solved the problem.

November 3, 2004 6:03 PM

I was wondering about times when both send and recieve show as zero packets. We have a 169.254.x.x IP so I think its trying to connect but we still show zero. Clicking repair fails and the numbers are still zero.

Does this mean the computer is not even trying to connect or can we not make such assumptions from that info?

What would you recommend as the next step, reinstall drivers? Rebuild TCP/IP? Other?

November 4, 2004 8:44 PM

A 169. IP address indicates that yoru machine doesn't think it's connected to the network, OR that there's no DHCP server responding to assign it an IP address. (169. addresses are last-ditch, self generated addresses when everythign else fails). The computer is TRYING to connect, but either it's not connected to the network, or there is some other kind of problem preventing communication. I'd start by removing as much as you can between the internet and the computer (like routers and such), and if that works, start putting them back until you can tell which one causes the problem.

December 6, 2004 8:40 PM

Hey Leo,
In my local area connection the packets are being sent but not recived. I recently was fooling around with settings and I guess I messed somthing up. I can connect to the internet but once I try to go to a new page a message comes up saying "the web page you requested is not avalable offline. to view this page press connect." How do I reconfigure the connection?

Sandeep kaul
December 18, 2004 2:17 AM

I recently faced such a problem.Firstly i scanned the computer with the Mcafee's Anti Virus,but it doesn't detected any virus.
Then i simply changed the Network card and it worked.

March 5, 2005 12:43 PM

I just recently got a new HDD and i had to reinstall all my divers. Everything works fine but i have noticed that for all my NIC cards its saying zero pockets received. I tried uninstalling the cards and reinstalling them but that did not help. When i repair it fails. For status it says that its connected and for speed its 100.0 Mbps, also the IP begins with 169. what should i do?

April 20, 2005 4:17 PM

Hi Leo
i have been experiencing some "wierd" problems with my Cable High Speed Internet, i keep losing the signal and its really hard to get it back. The pic. on my Tv also gets really messt up all the white snow and stuff. I have also been calling the company to ask them 2 come and see what the problem is, but they cant do anything..Yea and the packets activity thing is really low its in 15s received and if you think you know the solution please let me know. THANK YOU.

Amit Tipnis
May 9, 2005 6:50 PM

Hi All,

As per Scott and Petros, upgrading the Device Driver fixed my problem. My laptop has an Intel Pro/100 VE network adatper. Thanks a lot to everyone contributing towards this.


May 27, 2005 1:36 PM

k the problem that I have is that the sent and recieve is going at normal and then suddenly stops for no reason, during downloads during anything. So the 2 little computer screens go dark and the internet (while still connected) stops and everything from downloads to websites stop. I have the Ultrafast DSL from and it didnt use to do this but for no real reason it does this now.

July 13, 2005 9:10 AM

Like some others had mentioned previously, updating the device driver for my Intel PRO VE/100 adapter worked. Just go to the Intel website, then Network Adapters, then your NIC. I also freaked out, tried everything I could, and thought my ISP might kick me offline. But it didn't seem to affect traffic at all. Very wierd. Thanks!!!

August 2, 2005 11:22 PM

i got about 150 sent n still goin ... but 0 received n e 1 got a solution plzz mail me?

August 27, 2005 8:49 AM

i haf got a prob here. I am using a linksys router connected to an ADSL modem. I keep sending internet packets non-stop and receive veri little packets. I run all anti virus and spyware detect but found nutin. I can connect to the net for like a min or so and later it doesn't work anymore. i notice a file call iexplorer.exe is access non stop and netbios seems to send non stop even i disable it.

September 22, 2005 5:55 PM

SO i have opposite of everyone else... my recieved packets are dare i say normal however my sent packets suck.. they bounce around a couple of times a minute between 0 and 20ish.

atm my laptop and my pc are hooked up to a switch which is hooked up to the ethernet port in my dorm room. laptop works fine pc doesnt, have same problem if i switch cables, dont use the switch, switch ports, switch nic cards in my computer, none of it makes a difference. all of my drivers are up to date, no viruses, no spyware.
i went through network connections properties vs properties on my pc, they are all the same.

neither i or the tech service here at school can figure it out. any advice?

December 15, 2005 8:54 AM

I've had this problem like 3 times already, twice with dialup... first time with dsl. All my spyware definitions are updated. And my dial-up works fine now that my dsl is "Out of Order" Please, i need help

December 27, 2005 5:17 AM

plz suggest me, my broadband dsl cable is conected through USB post..the received packets shows correctly..but sent always shows 0 (zero)..
where might be the problem plz help me out..

February 17, 2006 12:17 PM

I've been having a strange problem with my internet lately this only happens when I play 1 particular game Known as SWG. I have all of the games requirenments, 1.25 gigs of ram and a Radeon 9250 Video card.
I noticed how everytime i play this game the Packets i recieve greatly increased constantly far more than what is sent. It's not a normal lag either the game runs fine for the first 10 min. Then I here a strange sound coming from my hardware when the lag kicks in. Now I know my internet isn't slow since I have a cable modem and I have anti-spyware and symantec anti-virus on constantly. Further more the lag isn't constant it stops after about 20 min. after it started. then it just comes back again later. I have no clue what it might be I've tried every solution I could find so far none have worked. I am hoping this makes sense to you.

March 18, 2006 12:37 AM

Plz tell me what does a LOCK symbol stands for on my received (ing) side connection on Local area connection activity symbol & how to remove that?Plz reply


April 13, 2006 1:34 PM


May 22, 2006 7:49 AM

i have a cable connection , use win xp .
Whenever i see the LAN CONNECTION STATUS i find the number of packets sent is roughly the same as the number of packets received.
E.g. AS OF NOW sent = 713 received = 698

I did use NETSTAT and got the following result

Active Connections

Proto Local Address Foreign Address State
TCP A:microsoft-ds A:0 LISTENING
TCP A:netbios-ssn A:0 LISTENING
UDP A:microsoft-ds *:*
UDP A:isakmp *:*
UDP A:1025 *:*
UDP A:1026 *:*
UDP A:1027 *:*
UDP A:4500 *:*
UDP A:ntp *:*
UDP A:1900 *:*
UDP A:ntp *:*
UDP A:netbios-ns *:*
UDP A:netbios-dgm *:*
UDP A:1900 *:* is the GATEWAY IP.
Kindly advise if there is anything amiss.
Thanking you in advance

June 2, 2006 7:05 AM

Hi, my peer to peer wireless connection says that both the computers are connected but there is no data transfer between them.i checked the ip addresses , one is subnet , the second one is , subnet both manually assigned.What could be the problem? the network adapters show that packets are being sent but no packets are received.Do i have a hardware problem? Please Help

June 9, 2006 7:07 AM

I have the reverse of everyone else. My recived bytes increase by about 4,000 to 6,000 per second even without any internet activity. Anti-virus and spyware do not detect anything. Any suggestions?

July 22, 2006 6:58 AM

That was somewhat helpful, but what i found with the packets in my connection was that the Local Area Connection was fine, but when I look at my Internet Gateway, it shows many more packets received than sent. i hope html code works, cause this is what it looks like:

I think this might be because some kid on Xbox Live got mad at me and got my IP address and discussed ways of how he was going to hack my computer. he mentioned that he was going to send a bunch of packets. TDIMon isn't detecting anything unusual. this is now slowing down my computer. I believe McAfee blocked his attempts to hack, and i reported, traced, and banned the range of IPs from his host. I hope that all makes sense.
Any help you can provide would be fantastic, and if you need clarification, emailing me would work great.
Thank You.

July 22, 2006 7:00 AM

Sorry, the image embedding didn't work. I accidentally didn't preview the comment. Anyway, here's the link for the image:

July 27, 2006 8:59 AM

If your internet status is showing lots activity while not using the internet, I would say maybe you have software that is updating or just someone is doing some port scans on your ip address, which would make your internet connection poor. If this is the case you may want to find out if you can renew your ip address, that is if it is possible for your type on connection. Visiting none trusted websites will normally result in port scans

As for popups if you keep gettion popups even while having pop up stopers installed you more than likely have adware. Try buying some good anti spyware/adware

August 7, 2006 10:41 AM

Hey i have the same tipe of problem. the number of my sent pakets allways drops down to zero about every 30 seconds. I would like to know if its normal? And if not, what should i do?

September 5, 2006 4:55 AM

my internet connection shows sent packets are 2,3 times more than recieved and that caues bad effect on my speed,specially when i want to play online,high ping i mean.
I used mcafee antivirus,norton 2006 antivirus,zone alarm antivirus,nod23,pc cilin and also many other spyremover programs,they almost found nothing and i still have problem.
i even installed a new version of windows xp but that also did nothing.
what else should i do?

May 15, 2007 3:53 AM

my nic is able to send but cannot recieve.
i cannot ping

May 29, 2007 3:42 AM

Can someone show me how to change it to show how many bytes transfered, not how many packets, in the "internet connection status"?

Or, 1 packet = ?? bytes, anyway?

Leo A. Notenboom
May 29, 2007 12:33 PM

Hash: SHA1

No. That's apparently information provided by the driver, and it's not
configrable. Ditto for the size of the packets, as I understand it.

Version: GnuPG v1.4.6 (MingW32)


June 22, 2007 11:58 PM

I thought finally I have found someone with the same problem, but reading all comments I am not sure anymore.
When I START up my computer I don't have millions of packets I have BILLIONs of packets. Connected since 5 Minutes (34,359,739,466 - sent / 1,455 received).

After a while using the computer I can't start or use any internet application. I still can use other programms but as soon as anything is using the network, the application is frozen.
I can not even start the taskmanager to kill application or shut down. All I can do is close all not frozen applications and switch off.

I ASSUME it has to do with the packages, but I am not sure. Is there any way how I can clean them up.
Repairing the network connection while it is working is possible, but does not solve the problem.

Yes - I have AVG Antivirus with latest pattern file.


August 23, 2007 12:36 PM

I had a similar problem as CHS.
Connected for 12 minutes: 841,813,598,384 Sent / 9,563 Received.
I've since rebuilt this (very jacked up) system, but I would be curious as to the bytes vs. packets equation, as Lipton asked. I'd like to know the theoretical speed it claims.

October 10, 2007 5:57 AM

i have over 2,000 millions recevied i getting realy scared haha

November 7, 2007 1:32 PM

You rock Leo! I've easily solved my slow internet virus problem with the super combo of TDImon & TCPView, weeding out what's causing the problem. The problem was in C: Windows\Prefetch, where the virus made tones of .pf or something like that files, which caused my laptop to become an email sending bot.

Thanks Leo!

November 29, 2007 1:23 AM

where does the packets stored in our system

January 24, 2008 8:51 PM

Hi Leo,
I have a problem with my Internet connection after accessing the Internet after about 1/2 hr or so. The Local Area Connection Status showed zero packets sent whenever I encounter this problem and I have to reboot my pc to get it started again. I've been trying to troubleshoot for a very long time and still can't find the root cause. I've changed my network card, rebooted my cable modem, etc and still encountered the same problem. Can I check if the problem is related to the motherboard or is it related to the network card driver? I had 2 network cards (1 DLink & 1 Linksys) and both gave me the same problem.. What else can I do to nail down the culprit? Thanks a lot, Leo..

August 12, 2008 8:21 PM

I was sending "billions and billions" of packets until I updated the network card driver. Now the packets sent and received balance out nicely. In my case I went directly to the Intel website which had more recent drivers than the computer manufacturer. Of course first check for viruses, etc.

October 8, 2008 8:11 AM

I did the same, update my driver to the newest version available in the intel website. It works.

March 22, 2009 5:35 AM

Hi Leo,i have a lot of more sent packets than received (sent101.600) (received 50.276)...what to do?

theo smith
March 27, 2009 2:54 PM

Hi when i stay on the internet i send and recieve loads of packets...please can you help on what to do?

June 3, 2009 12:15 PM

Hi, when I start my PC in Local Area Connection Status shows what I have 200000 send and 423000 received. Can u tell me what`s the problem? Couze I can`t play on-line games. They frozen all the time.But when I restart my PC LACS shows for example 400000 send and 200000 received and games works fine (but that happen not all the time) please HELP

October 27, 2009 6:24 PM

when i starts internet connection automatically received byte are increasing without opening any sites.even i stopped antivirus updating automatically.

December 1, 2009 5:46 AM

i m getting more received packets dn sent packets
how to resolve it

October 7, 2010 10:11 PM

my internet connection 200k sent 27k recieved is this a virus? could you help me fix this its not normal cause im using broadband and its the first time it showed like this what should i do?

May 4, 2012 11:39 AM

I have sent 43,843,217,918 and received 11,034,474,329. Is there something wrong, the connection is less than a day.

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