Hi, What is the method that hackers use to go thru the firewall. I have been seeing probes that light up the router WAN light and my PC's connection light. So they are passing right thru the firewall to my PC. I know they have a way to know which site I am going to - they have access to a up stream router. So by knowing the site I am at, they can craft packets that spoof the source address. ( the web site's ip address that I am surfing to ) But I don't understand the mechanics of it. If the packet spoofs the source address of the incoming packet, how does my PC know to return the results to the hacker? Wouldn't my PC send the responses back to that source address ?