View Full Version : Mysterious network activity

26th November 2008, 07:29 AM
I just started up my MB at uni and all of a sudden it is pulling down 100K/s according to iStat menus. I don't have any programs open, and the only thing that I can see doing anything remotely network related in the console log is VMware, so I tried killing all processes related to it in activity monitor and it is still doing it....and it seems to be locking up my network connection whatever it is.

Anyway, I fire up my old iMac to have a look on here and try and figure this out, and lo and behold it is doing the same thing! I can't for the life of me get my head around this. Can anyone think of any programs that would do a background download without asking permission first? The only thing I could think of was Orbicule's "Undercover" which is on the MB, but it isn't on the iMac so that probably isn't it.

Cheers :confused:
- Berwyck

26th November 2008, 07:36 AM
Could be the way you have set up software update? This will down load in the background while your working also Fire fox has a similar capability.. You could try installing Little Snitch (from memory it has a trial period) that would probably sort it out for your

Little Snitch (http://www.obdev.at/products/littlesnitch/index.html)

Or if your comfortable with CLI you could run tcpdump -

Hope that helps

26th November 2008, 07:52 AM
I don't think it is software update or FF, it has clocked up 250MB+ now. I will give tcpdump a go and see what I can find :)

26th November 2008, 08:19 AM
Little snitch has a bandwidth monitor window, which works while its demo period is running. If you install the demo of it and open the monitor, it should show you just which process is pulling down the most data, and where from.

Looks something like this:


Download it from: Little Snitch - Download (http://www.obdev.at/products/littlesnitch/download.html)