I have two VOIP lines at home and would have no issue with putting a packet sniffer upstream of the cable modem. What I want to know is how to identify the servers generating the VOIP calls with the spoofed caller ID's. I'm in a position to take legal action. I am aware that the people I may be dealing with could be located in Russia and the former Soviet client states that Brian Krebs writes about in SPAM Nation. I am also aware that a good number of these callers are U.S. Generated political hate speech designed to disrupt elections. I am located in SOCAL (near Steve Gibson) and I would like nothing better than to see just how far I can go to track down and then sue these generators of false Caller ID VOIP "SPIT"