I have a Samsung I-5700 Spica c official Android 2.1, not rooted.
Noticed uncomfortable fact for themselves: NetCounter shows quite a lot of bandwidth consumption in the inactive mode. Sync is off, the stores and websites do not go, but steadily consumed 500-1000 KB per day, intermittently even 5+ MB/day. Given that I have selected GPRS pack 20MB/month, it turns out very expensive.
Therefore, there is the idea to find out who catches the traffic, where and why. The gugleniya hints that you can establish some semblance of WireShark in the phone, but it must have Ruth. I have yet to such a responsible step not ready, therefore, looking for a way to do it externally: connect the phone via wifi and at least on IP addresses to assess where goes the phone without my knowledge.
Of devices have router (DLink DIR-400) with firmware dd-wrt and laptop. I suspect that the router may in some way to configure the logging of addresses and measure traffic to a specific device, but given my complete ignorance of Linux, I don't know which side to approach the issue. Please confirm or disprove my guesses and tell me how to implement the plan.