How do I know PeerBlock is working?
Open up a command prompt (Start -> Run -> “cmd”), and run the command “ping 3.0.0.0”. This ip-address (3.0.0.0) is owned by General Electric, and should be blocked by the “p2p” list by default. If PeerBlock is operating correctly, this ping command should return “General failure” (on Windows Vista/7; “Destination host unreachable” on XP) and the PeerBlock UI should show this access as Blocked; if PeerBlock is not working, the ping command should return “Request timed out” and the PeerBlock UI will show this access as Allowed (if the “Show allowed connections” checkbox in the PeerBlock settings panel is checked).
