I am rather concerned and perplexed by a recent experience I had during a Tails session.

I was downloading a large file via wget, when I pressed "ctrl-c" to pause the download. The terminal reacted as expected, suggesting that the download had indeed stopped. But the LEDs on my router ("Internet" as well as "Wireless") continued flashing without any let-up. I had not been doing anything else that involved net traffic and I don't even think that I had Iceweasal open. That left wget as the obvious suspect to me; it must have somehow not actually have been killed by ctrl-c, I figured, despite clearly appearing to have been (in the terminal). So I then proceeded to execute the command killall wget in the terminal. Oddly, despite having no effect on the lights continuing to flicker on my router, this command did not generate any "no process found" message. Meanwhile, despite the furious flickering continuing unabated, the file I had been downloading showed no signs of increasing in size. (I checked several times in Nautilus, hitting f5 to refresh the data).

I executed the command netstat -anp | grep -e tcp -e udp in terminal but saw nothing in the output that would seem to solve the mystery of the phantom traffic. (From what I can recall, just a number of instances of tor, vidalia and pdnsd.)

Finally, after at least several minutes with no abatement in the flickering, I just powered-off my router. Since powering it on again shortly afterward, it has been back to normal.

Is the most likely explanation a successful attack on my router that had begun traffic at some point before I had killed wget ?

I wonder, also, whether whatever happened was the result of something that went wrong in Tails itself or just happened to occur while I was running Tails.

It's just Tor. Probably your client updating its node list.
Comment by Anonymous Wed 21 Nov 2012 08:41:51 AM CET