<div dir="ltr">Hi,<div><br><div>I'm having trouble setting up a VPN between two machines that are behind NAT firewalls (one is an Amazon EC2 instance). I'm having trouble interpreting the error messages - I don't understand what the states reported actually mean - is there a diagram anywhere of what the transitions are between the states, and what the IP addresses used at each point are?</div>
<div><br></div><div>E.g. something like:</div><div><br></div><div>Initiator: STATE_MAIN_I1 - packet sent from "left" to "right" with source set to "blah"</div></div><div>Receiver: Waits for STATE_MAIN_I1 packet, expects source to be "blah" etc.</div>
<div><br></div><div>I'm getting stuck at STATE_MAIN_I3, but I'm not sure what should be happening at this stage: whether it is a routing issue or just misconfigured IP addresses.</div><div><br></div><div>Iain<br></div>
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