I connect to the network via a laptop (physical) 10/100 LAN. Somehow by the end of the day I have nearly 20 million packets recieved and 15 million sent. I do not do much more than other users with PCs who may run up 100k packets max. I do not connect to constant streams of internet traffic either.
Cisco does not market any laptops at all, and does not market any LAN cards under the Cisco name. If I recall correctly, they do market LAN cards under the Linksys name. This newsgroup doesn't talk about the Linksys equipment much, but if you tell us exactly which model of Linksys card you are using, we might be able to come up with something.
If you aren't using Cisco/Linksys equipment, then this is probably not the right newsgroup. My guess is that you have a virus or spyware and should install software such as "Spyware Search & Destroy", "AdAware SE Personal", and one of the good free anti-virus programs (lots of debate over which is the best -- you can always download a trial of one of the famous ones to get you started).
I have plugged the LAN into my dell laptop - so am using a default network card (3Com 3C920 Integrated Fast Ethernet Controller (3C905C-TX Compatible). And this is linked to a Cicso 857W router. I am running Zonelabs Security Suite (latest version) so I hope I do not have a virus etc. Please let me know if I don't count for this group.
Well I've got 2.5m/1.3m packets after nearly 24 hours. And I think I did a few gigs of downloads last night.
99% chance you have a program running in the background doing something.
The #1 likelihood is the current spyware/malware glut. Most PCs that I have had to repair that were in a really bad state had Mcafee or Norton antivirus installed and spyware had disabled them. AOL Spyware scanners only detected spyware after it was fully installed and did not stop the spyware from bringing other spyware programs down and installing them. Once this process starts it is just a matter of time till you landslide and have a dozen malwares running in the background openging popups and even trojans. Worms/spyware can scan the entire internet looking for victims. The presence of trojans can also raise traffic levels considerably. This is an indication that someone else is likely using your PC by accessing the trojan. Usually, when I've found a PC that has been compromised to that level it performs incredibly poorly, popups galore and the simplest of webpages display slowly.
I would troubleshoot it as a PC problem first. Use all the freewares to check things out
RUN AD-AWARE SE RUN SPYBOT SEARCH and DESTROY v1.4 - makes sure you get all the latest updates before doing your first scan. Scannning with old definitions is useless.
RUN an external virus checker to validate that yours hasn't been compromised.
free online virus and spyware scan
free online ActiveScan
Each product will find different things, no one product is enough. If they are relatively clean (no viruses, minimal MALWARE) you can probably be confident you're ok.
If you find lots of serious stuff(Malware, viruses, trojan), reboot, then do a second run of all of them. If stuff keeps appearing than you've still got something serious. At that point I suggest installing a trial version of TROJAN HUNTER. It will clean the PC and i've found that seriously screwed PCs still had really bad stuff that only this one detected.
Thanks for the info. I used to run Ad-aware and Spybot but now have it all within the Zone Alarms Suite. So I think my laptop is clean. I have, today, purely by chance upgraded the driver for the LAN card and although it was not mentioned as being one of the fixes I am getting far less throughput - so maybe it is fixed. I'll watch for a bit and see. I guess it is becasue I have just installed a new Cisco router (and am having some issues wth VPN) that I have noticed this issue now, I must have always had it!